Cita APA (7th ed.)

Parker, T. J., & Haswell, W. A. (1940). A Text-book of zoology. Macmillan.

Cita Chicago (17th ed.)

Parker, Thomas Jeffrey, i William A. Haswell. A Text-book of Zoology. London: Macmillan, 1940.

Cita MLA (9th ed.)

Parker, Thomas Jeffrey, i William A. Haswell. A Text-book of Zoology. Macmillan, 1940.