Deka, Anil, G. Baishya, Kabita Sarma, K. B. Dev Choudhry, and J. Rajkhowa. 2015. “Comparative Anatomical Study on the Isthmus of Pati and Chara-Chemballi Ducks (Anas Platyrhynchos Domesticus) During Laying Periods”. Indian Journal of Veterinary Anatomy 26 (2). https://epubs.icar.org.in/index.php/IJVA/article/view/45776.