Mahmudatussa, Ai, et al. “Sensory Profile of Baked Purple Sweet Potato Cultivated from Three Different Locations”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 20, no. 2, Feb. 2015, pp. 87-96, https://gssrr.org/JournalOfBasicAndApplied/article/view/3449.