APA (7th ed.) Citation

Cayley, N. W., & Roberts, R. (1980). What bird is that ? Angus and Robertson Publishers.

Chicago Style (17th ed.) Citation

Cayley, Neville W., and Ralph Roberts. What Bird Is That ? London: Angus and Robertson Publishers, 1980.

MLA (9th ed.) Citation

Cayley, Neville W., and Ralph Roberts. What Bird Is That ? Angus and Robertson Publishers, 1980.

Warning: These citations may not always be 100% accurate.