9,005 Siti Sarah Binti Mohd Sinin 2018-12-21 https://plants.usda.gov/plantguide/pdf/pg_pisa6.pdf Pavek, P.L.S. (2012). Plant guide for pea (Pisum sativum L.). USDA-Natural Resources Conservation Service, Pullman, WA. Retrieved from https://plants.usda.gov/plantguide/pdf/pg_pisa6.pdf NULL