diff --git a/Text/CSL/Input/Identifier.hs b/Text/CSL/Input/Identifier.hs
--- a/Text/CSL/Input/Identifier.hs
+++ b/Text/CSL/Input/Identifier.hs
@@ -11,7 +11,7 @@
 
 
 module Text.CSL.Input.Identifier
-       (readDOI, readArXiv, readISBN )
+       (readID, readDOI, readArXiv, readISBN )
        where
 
 
diff --git a/Text/CSL/Input/Identifier/Internal.hs b/Text/CSL/Input/Identifier/Internal.hs
--- a/Text/CSL/Input/Identifier/Internal.hs
+++ b/Text/CSL/Input/Identifier/Internal.hs
@@ -12,6 +12,8 @@
 import           Control.Monad.IO.Class (liftIO)
 import           Control.Monad.Trans.Resource (runResourceT)
 import qualified Data.ByteString.Char8 as BS
+import           Data.Char (toLower)
+import           Data.List (span)
 import qualified Data.Text as Text
 import           Database.Persist
 import           Database.Persist.TH
@@ -29,7 +31,7 @@
 
 
 -- $setup
--- >>> import Control.Applicative((<$>))
+-- >>> import Control.Applicative((<$>), (<*>))
 -- >>> import Data.Either.Utils(forceEither)
 -- >>> import Text.CSL
 
@@ -81,6 +83,32 @@
     [r] -> return $ Right r
     []  -> return $ Left $ src ++ " returned no reference."
     _   -> return $ Left $ src ++ " returned multiple references."
+
+
+-- | Multi-purpose reference ID resolver. Resolve 'String' starting
+-- with "arXiv:", "isbn:", "doi:" to 'Reference' .
+-- 
+-- >>> (==) <$> readArXiv "1204.4779" <*>  readID "arXiv:1204.4779"
+-- True
+-- >>> (==) <$> readDOI "10.1088/1749-4699/5/1/015003" <*> readID "doi:10.1088/1749-4699/5/1/015003"
+-- True
+-- >>> (==) <$> readISBN "9780199233212" <*> readID "isbn:9780199233212"
+-- True
+
+
+
+readID :: Resolver Reference
+readID str 
+  | idId == "arxiv" = readArXiv addr
+  | idId == "doi"   = readDOI addr
+  | idId == "isbn"  = readISBN addr
+  | otherwise       = return $ Left $ "Unknown identifier type: " ++ str
+  where
+    (h,t) = span (/=':') str
+    idId = map toLower h
+    addr = drop 1 t
+    
+
 
 
 -- | resolve a DOI to a 'Reference'.
diff --git a/citation-resolve.cabal b/citation-resolve.cabal
--- a/citation-resolve.cabal
+++ b/citation-resolve.cabal
@@ -2,7 +2,7 @@
 -- documentation, see http://haskell.org/cabal/users-guide/
 
 name:                citation-resolve
-version:             0.1.0.0
+version:             0.2.0.0
 synopsis:            convert document IDs such as DOI, ISBN, arXiv ID to bibliographic reference.
 description:         
   This modules provides a way to convert document identifiers, such