Cita APA (7a ed.)

Marshall, A. J., & Williams, W. D. (1972). Textbook of Zoology: Invertebrates (7th ed.). Macmillan.

Cita Chicago Style (17a ed.)

Marshall, A. J., y W. D. Williams. Textbook of Zoology: Invertebrates. 7th ed. London: Macmillan, 1972.

Cita MLA (9a ed.)

Marshall, A. J., y W. D. Williams. Textbook of Zoology: Invertebrates. 7th ed. Macmillan, 1972.