8,784 Husna Zolkepli 2020-02-18 https://www.hort.purdue.edu/newcrop/duke_energy/Ipomoea_batatas.html Duke, J. A. (1983). Ipomoea batatas (L.) Lam. Retrieved from https://www.hort.purdue.edu/newcrop/duke_energy/Ipomoea_batatas.html