1. Quattrochhi U. CRC World Dictionary of Plant Names. Boca Raton, FL: CRC Press; 1947.
2. Berberis and Mahonia – A taxonomic revision;Ahrendt;J Linnean Soc Lond (Botany),1961
3. Adhikari B. Systematics and Phytographic Studies of Berberis L., (Berberidaceae) in Nepal Himalaya (Dictoral Dissertation, University of Edinburgh); 2010.
4. History and concepts of big plant genera;Frodin;Taxon,2004
5. A study of Chromosome number in two genera of Berberidaceae: Mahonia and Berberis;Derman;J Arnold Arbor,1931