Metwally, M. A., H. B. Hussieni, A. A. Kassab, and E. A. Eshrah. “Some Comparative Anatomical Studies on the Laryngeal Muscles and Cavity of Buffaloes, Camels and Donkeys”. Journal of Advanced Veterinary Research, vol. 8, no. 3, July 2018, pp. 32-37, https://advetresearch.com/index.php/AVR/article/view/302.