Mestres Torres, Cristina, María Teresa Abelló Poveda, and José Domingo Rodríguez Teijeiro. 2022. “Morphological Appearance and Effects of Castration on Blackback Gorillas Gorilla Gorilla Gorilla in the EAZA Ex-Situ Population”. Journal of Zoo and Aquarium Research 10 (1):8-15. https://doi.org/10.19227/jzar.v10i1.616.