Morris, D. 1986. An Indian rhino in Lisbon. New Scientist 1986 December 4: 64, fig. 1.
Morris, D. 1965. The mammals: a guide to the living species. London, Hodder and Stoughton. pp. 1-448.
Morris, D. 1964. Wildlife tour. Times Literary Supplement no. 3268, 15 October 1964: 941.
Jarvis, C.; Morris, D. 1961. Mammals bred in captivity in 1960. International Zoo Yearbook 2: 262.
Jarvis, C.; Morris, D. 1961. Longevity survey: length of life of mammals in captivity at the London Zoo and Whipsnade Park. International Zoo Yearbook 2: 288-299.






