APA (7th ed.) Citation

Kolar, K., & Spitzer, K. H. (1990). Encyclopedia of parakeets. T.F.H..

Chicago Style (17th ed.) Citation

Kolar, Kurt, and Karl Heinz Spitzer. Encyclopedia of Parakeets. Neptune City, NJ: T.F.H., 1990.

MLA (9th ed.) Citation

Kolar, Kurt, and Karl Heinz Spitzer. Encyclopedia of Parakeets. T.F.H., 1990.