APA (7th ed.) Citation

Forshaw, J. M., & Cooper, W. T. (1977). Parrots of the world. T.F.H..

Chicago Style (17th ed.) Citation

Forshaw, Joseph Michael, and William T. Cooper. Parrots of the World. Neptune, N.J.: T.F.H., 1977.

MLA (9th ed.) Citation

Forshaw, Joseph Michael, and William T. Cooper. Parrots of the World. T.F.H., 1977.