Pardales Jr., J.R., and C.B. Esquibel. “ROOT DEVELOPMENT IN SWEETPOTATO STEM CUTTINGS AS INFLUENCED BY PRE-PLANTING, PLANTING AND POST-PLANTING PRACTICES”. Annals of Tropical Research 19 (September 20, 1997): 56–65. Accessed May 10, 2025. https://atr.vsu.edu.ph/article/view/561.