APA (7th ed.) Citation

Heinzel, H., Fitter, R. S. R., & Parslow, J. (1972). The birds of Britain and Europe with North Africa and the Middle East. Collins.

Chicago Style (17th ed.) Citation

Heinzel, Hermann, Richard Sidney Richmond Fitter, and John Parslow. The Birds of Britain and Europe with North Africa and the Middle East. London: Collins, 1972.

MLA (9th ed.) Citation

Heinzel, Hermann, et al. The Birds of Britain and Europe with North Africa and the Middle East. Collins, 1972.