Cita APA (7a ed.)

Haswell, W. A., & Parker, T. J. (1897). A text book of zoology. Macmillan.

Cita Chicago Style (17a ed.)

Haswell, William A., y T. Jeffery Parker. A Text Book of Zoology. London: Macmillan, 1897.

Cita MLA (9a ed.)

Haswell, William A., y T. Jeffery Parker. A Text Book of Zoology. Macmillan, 1897.