Pandey, R.K; Westphal, E. (1989). "Vigna unguiculata (L.) Walp". Plant Resources of South-East Asia No. 1: Pulses. Plant Resources of South-East Asia Foundation. Dicapai pada 19 Ogos 2013 – melalui PROSEAnet.
"Tropical Forages: an interactive selection tool. Vigna ungiculata Factsheet". CSIRO Sustainable Ecosystems (CSIRO), Department of Primary Industries and Fisheries (DPI&F Queensland), Centro Internacional de Agricultura Tropical (CIAT) and International Livestock Research Institute (ILRI). Jun 2005. Diarkibkan daripada yang asal pada 14 Disember 2010. Dicapai pada 12 Julai 2010.
web.archive.org
"Tropical Forages: an interactive selection tool. Vigna ungiculata Factsheet". CSIRO Sustainable Ecosystems (CSIRO), Department of Primary Industries and Fisheries (DPI&F Queensland), Centro Internacional de Agricultura Tropical (CIAT) and International Livestock Research Institute (ILRI). Jun 2005. Diarkibkan daripada yang asal pada 14 Disember 2010. Dicapai pada 12 Julai 2010.