APA (7th ed.) Citation

Heinroth, O., & Heinroth, K. (1958). The birds. University of Michigan Press.

Chicago Style (17th ed.) Citation

Heinroth, Oskar, and Katharina Heinroth. The Birds. Ann Arbor: University of Michigan Press, 1958.

MLA (8th ed.) Citation

Heinroth, Oskar, and Katharina Heinroth. The Birds. University of Michigan Press, 1958.