diff --git a/README.md b/README.md
index 9cdb4b0be7f6f63937da8f8d02a5eabe5039e3bc..2cccd06091c3404b1d8d00502f386f1018e9bc30 100644
--- a/README.md
+++ b/README.md
@@ -19,3 +19,8 @@ Recording sound
 ---------------
 
 `i_sound.sh | o_sndfile -f toto.mp3` records the sound from the default microphone in a mp3 file.
+
+See also
+========
+
+- [libsndfile](http://www.mega-nerd.com/libsndfile)