Cita APA (7a ed.)

Lerwill, C. J. (1971). An introduction to the classification of animals. Constable.

Cita Chicago Style (17a ed.)

Lerwill, C. J. An Introduction to the Classification of Animals. London: Constable, 1971.

Cita MLA (9a ed.)

Lerwill, C. J. An Introduction to the Classification of Animals. Constable, 1971.