diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # spherical
 
+## 0.1.3.0
+
+  * Add Lambert azimuthal projection
+  * Add `areaPolygonGeneral` in case they want it
+
 ## 0.1.2.2
 
   * Documentation improvements
diff --git a/LICENSE b/LICENSE
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright Vanessa McHale (c) 2018
+Copyright Vanessa McHale (c) 2018, 2020
 
 Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
 
diff --git a/spherical.cabal b/spherical.cabal
--- a/spherical.cabal
+++ b/spherical.cabal
@@ -1,37 +1,36 @@
-cabal-version: 1.18
-name: spherical
-version: 0.1.2.2
-license: BSD3
-license-file: LICENSE
-copyright: Copyright: (c) 2018 Vanessa McHale
-maintainer: vanessa.mchale@iohk.io
-author: Vanessa McHale
-synopsis: Geometry on a sphere
+cabal-version:      1.18
+name:               spherical
+version:            0.1.3.0
+license:            BSD3
+license-file:       LICENSE
+copyright:          Copyright: (c) 2018, 2020 Vanessa McHale
+maintainer:         vamchale@gmail.com
+author:             Vanessa McHale
+synopsis:           Geometry on a sphere
 description:
     Functions in pure Haskell for geometric computations on the surface of a sphere.
-category: Math
-build-type: Simple
-extra-source-files:
-    cabal.project.local
-extra-doc-files: README.md
-                 CHANGELOG.md
 
+category:           Math
+build-type:         Simple
+extra-source-files: cabal.project.local
+extra-doc-files:
+    README.md
+    CHANGELOG.md
+
 source-repository head
-    type: git
+    type:     git
     location: https://github.com/vmchale/spherical
 
 flag development
-    description:
-        Enable `-Werror`
-    default: False
-    manual: True
+    description: Enable `-Werror`
+    default:     False
+    manual:      True
 
 library
-    exposed-modules:
-        Math.Geometry.Spherical
-    hs-source-dirs: src
+    exposed-modules:  Math.Geometry.Spherical
+    hs-source-dirs:   src
     default-language: Haskell98
-    ghc-options: -Wall
+    ghc-options:      -Wall
     build-depends:
         base >=4.3 && <5,
         composition-prelude -any
@@ -40,8 +39,9 @@
         ghc-options: -Werror
 
     if impl(ghc >=8.0)
-        ghc-options: -Wincomplete-uni-patterns -Wincomplete-record-updates
-                     -Wredundant-constraints -Widentities
+        ghc-options:
+            -Wincomplete-uni-patterns -Wincomplete-record-updates
+            -Wredundant-constraints -Widentities
 
     if impl(ghc >=8.4)
         ghc-options: -Wmissing-export-lists
diff --git a/src/Math/Geometry/Spherical.hs b/src/Math/Geometry/Spherical.hs
--- a/src/Math/Geometry/Spherical.hs
+++ b/src/Math/Geometry/Spherical.hs
@@ -16,6 +16,7 @@
     , winkel3
     , mercator
     , bonne
+    , lambertAzimuthal
     -- * Reference points
     , washingtonDC
     , mecca
@@ -86,6 +87,18 @@
           e = (long - meridian) * cos lat / rho
           cot = (1/) . tan
 
+-- | See
+-- [here](https://mathworld.wolfram.com/LambertAzimuthalEqual-AreaProjection.html).
+--
+-- @since 0.1.3.0
+lambertAzimuthal :: Floating a
+                 => a -- ^ Standard parallel
+                 -> a -- ^ Central longitude
+                 -> (a, a)
+                 -> (a, a)
+lambertAzimuthal phi1 lambda0 (long, lat) = (k' * cos lat * sin (long - lambda0), k' * cos phi1 * sin lat - sin phi1 * cos lat * cos (long - lambda0)) -- lambda corresponds to long, phi to lat on mathworld
+    where k' = sqrt (2 / (1 + sin phi1 * sin lat + cos phi1 * cos lat * cos (long - lambda0)))
+
 -- | Albers projection for a given reference point.
 --
 -- > ablers washingtonDC
@@ -145,16 +158,28 @@
     where stepArea point (sum', base) = (sum' + areaTriangle r base1 base point, point)
 areaConvex _ _ = error "attempted to take area of polygon with < 3 points"
 
--- | Uses areal projection; then finds area of the polygon by the shoelace
--- method.
---
--- This is morally dubious in that it uses the Bonne projection centered around
+-- | This is morally dubious in that it uses the Bonne projection centered around
 -- DC, so it will blow up in some cases.
 areaPolygon :: Floating a
             => a -- ^ Radius of sphere
             -> [(a, a)] -- ^ Polygon on the sphere, with points given in degrees.
             -> a
-areaPolygon r = (*factor) . areaPolyRectangular . fmap (bonne (radians 25) (snd washingtonDC) . toRadians)
+areaPolygon r = areaPolygonGeneral r (snd washingtonDC)
+
+
+-- | Uses areal projection; then finds area of the polygon by the shoelace
+-- method.
+--
+-- This is morally dubious in that it uses the Bonne projection so it will blow
+-- up in some cases.
+--
+-- @since 0.1.3.0
+areaPolygonGeneral :: Floating a
+                    => a -- ^ Radius of sphere
+                    -> a -- ^ Central meridian
+                    -> [(a, a)] -- ^ Polygon on the sphere, with points given in degrees.
+                    -> a
+areaPolygonGeneral r meridian = (*factor) . areaPolyRectangular . fmap (bonne (radians 25) meridian . toRadians)
     where factor = 1717856/4.219690791828533e-2 * ((r / 6371) ^ (2 :: Int))
 
 perimeterPolygon :: Floating a