Toyoda, A. ., K. . Matsudaira, T. . Maruhashi, S. . Malaivijitnond, and Y. . Kawamoto. “Highly Versatile, Non-Invasive Method for Collecting Buccal DNA from Free-Ranging Non-Human Primates”. Journal of Tropical Biology & Conservation (JTBC), vol. 18, Oct. 2021, pp. 251–267, doi:10.51200/jtbc.v18i.3460.