APA (7th ed.) Citation

Wallace, G. J. (1963). An introduction to ornithology (2nd ed.). Macmillan.

Chicago Style (17th ed.) Citation

Wallace, George John. An Introduction to Ornithology. 2nd ed. New York: Macmillan, 1963.

MLA (9th ed.) Citation

Wallace, George John. An Introduction to Ornithology. 2nd ed. Macmillan, 1963.