Cita APA (7th ed.)

Bostock, S. S. C. (1993). Zoos and animal rights: The ethics of keeping animals. Routledge.

Cita Chicago (17th ed.)

Bostock, Stephen St. C. Zoos and Animal Rights: The Ethics of Keeping Animals. London ; New York: Routledge, 1993.

Cita MLA (9th ed.)

Bostock, Stephen St. C. Zoos and Animal Rights: The Ethics of Keeping Animals. Routledge, 1993.