APA (7th ed.) Citation

Barker, R. D., & Vestjens, W. J. M. (1989). The food of Australian birds. CSIRO, Australia.

Chicago Style (17th ed.) Citation

Barker, R. D., and W. J. M. Vestjens. The Food of Australian Birds. [Place of publication not identified]: CSIRO, Australia, 1989.

MLA (9th ed.) Citation

Barker, R. D., and W. J. M. Vestjens. The Food of Australian Birds. CSIRO, Australia, 1989.