9,706 Siti Sarah Binti Mohd Sinin 2020-06-29 https://books.google.com.my/books?id=qFdB3GSLMcEC&pg=PA525&lpg=PA525&dq=Vigna+unguiculata+subsp.+sesquipedalis+harvest+days&source#v=onepage&q=Vigna%20unguiculata%20subsp.%20sesquipedalis%20harvest%20days&f=false Food and Agriculture Organization of the United Nations (1988). Traditional Food Plants: A Resource Book for Promoting the Exploitation and Consumption of Food Plants in Arid, Semi-arid and Sub-humid Lands of Eastern Africa. Food & Agriculture Org. Retrieved from https://books.google.com.my/books?id=qFdB3GSLMcEC&pg=PA525&lpg=PA525&dq=Vigna+unguiculata+subsp.+sesquipedalis+harvest+days&source#v=onepage&q=Vigna%20unguiculata%20subsp.%20sesquipedalis%20harvest%20days&f=false