--- a/README.rst	Wed Nov 26 06:55:48 2014 -0500
+++ b/README.rst	Wed Feb 25 10:52:35 2015 -0500
@@ -41,11 +41,12 @@
           (contribution from Nicola Soranzo)
 v0.0.18 - Add retries to BLAST XML merge code.
         - Modify display_data method to allow unit tests to function.
-v0.0.19 - Add ``blastdbp`` datatype for BLAST protein domain databases, for use
+v0.0.19 - Add ``blastdbd`` datatype for BLAST protein domain databases, for use
           with makeprofiledb and rpsblast (contribution from Bjoern Gruening).
         - Add ``pssm-asn1`` datatype for Position Specific Scoring Matrices
           (PSSMs) stored in NCBI's "scoremat" ASN.1 format (usually named
-          as *.smp), used as input files for makeprofiledb.
+          as ``*.smp``), used as input files for makeprofiledb.
+v0.0.20 - Added "NCBI BLAST+ integrated into Galaxy" preprint citation.
 ======= ======================================================================
 
 
@@ -118,6 +119,16 @@
 described above.
 
 
+Citation
+========
+
+Please cite the following paper (currently available as a preprint):
+
+NCBI BLAST+ integrated into Galaxy.
+P.J.A. Cock, J.M. Chilton, B. Gruening, J.E. Johnson, N. Soranzo
+bioRxiv DOI: http://dx.doi.org/10.1101/014043 (preprint)
+
+
 Licence (MIT)
 =============