Somchai Prabhavat, Suparat Reungmaneepaitoon, and Duangchan Hengsawadi. “Production of High Protein Snacks from Sweet Potato”. Agriculture and Natural Resources, vol. 29, no. 1, Mar. 1995, pp. 131-4, https://li01.tci-thaijo.org/index.php/anres/article/view/241284.