Greene, W., Dierenfeld, E. S., & 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), 1–14. https://doi.org/10.19227/jzar.v7i1.329