King, Tony, and Paul Beer. “Rhinos, Elephants and The Aspinall Foundation: Over 30 Years of Captive-Breeding, Reintroduction and Conservation”. Pachyderm 59 (October 3, 2018): 127–131. Accessed December 4, 2024. https://pachydermjournal.org/index.php/pachyderm/article/view/96.