Narong Chungsamarnyart, Suratwadee Jiwajinda, Chainarong Ratanagreetakul, and Weerapol Jansawan. 1991. “Practical Extraction of Sugar Apple Seeds against Tropical Cattle Ticks”. Agriculture and Natural Resources 25 (5). Bangkok, Thailand:101-5. https://li01.tci-thaijo.org/index.php/anres/article/view/242018.