Apinun Suprasert, Boontham Chongcharoen and Suppaluk Romrattanapun (1990) “Histochemical Characterization of Glycoconjugates Present in Cloacal Epithelium of the Chicken”, Agriculture and Natural Resources. Bangkok, Thailand, 24(1), pp. 116–124. available at: https://li01.tci-thaijo.org/index.php/anres/article/view/242108 (accessed: 18 September 2026).