Cita APA (7a ed.)

Barker, R. D., & Vestjens, W. J. M. (1990). The food of Australian birds. CSIRO Australia.

Cita Chicago Style (17a ed.)

Barker, R. D., y W. J. M. Vestjens. The Food of Australian Birds. Lyneham, ACT, Australia: CSIRO Australia, 1990.

Cita MLA (8a ed.)

Barker, R. D., y W. J. M. Vestjens. The Food of Australian Birds. CSIRO Australia, 1990.