Greene, W., Dierenfeld, E. S. and Mikota, S. (2019) “A Review of Asian and African Elephant Gastrointestinal Anatomy, Physiology, and Pharmacology: Elephant Gastrointestinal Anatomy, Physiology, and Pharmacology”, Journal of Zoo and Aquarium Research, 7(1), pp. 1–14. doi: 10.19227/jzar.v7i1.329.