Cita APA

Woolham, F., Avon, D., & Tilford, T. (1985). Aviary birds in colour. Londres: Blandford Press.

Citación estilo Chicago

Woolham, Frank, Dennis Avon, y Tony Tilford. Aviary Birds in Colour. Londres: Blandford Press, 1985.

Cita MLA

Woolham, Frank, Dennis Avon, y Tony Tilford. Aviary Birds in Colour. Londres: Blandford Press, 1985.