APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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