Cita APA

Campbell, B., & Campbell, B. (1974). The Dictionary of birds in colour. London, Sydney: Michael Joseph.

Citación estilo Chicago

Campbell, Bruce, y Bruce Campbell. The Dictionary of Birds in Colour. London, Sydney: Michael Joseph, 1974.

Cita MLA

Campbell, Bruce, y Bruce Campbell. The Dictionary of Birds in Colour. London, Sydney: Michael Joseph, 1974.