1. The reproductive biology of the chelonia;Kuchling,1999
2. Chelonian reproductive disorders;Innis;Vet Clin North Am Exot Anim Pract,2002
3. Endoscopy and endosurgery of the chelonian reproductive tract;Innis;Vet Clin North Am Exot Anim Pract,2010
4. Updates and practical approaches to reproductive disorders in reptiles;Sykes;Vet Clin North Am Exot Anim Pract,2010
5. Mitchell MA, Zimmerman D, Heggem B. Collection and characterization of semen from leopard tortoises. In: Proceedings of the Association of Reptilian and Amphibian Veterinarians. Milwaukee (WI): 2009. p. 166.