APA (7th ed.) Citation

Whitlock, R. (1981). Birds at risk: A comprehensive world-survey of threatened species. Moonraker Press.

Chicago Style (17th ed.) Citation

Whitlock, Ralph. Birds at Risk: A Comprehensive World-survey of Threatened Species. Bradford-on-Avon, Wiltshire: Moonraker Press, 1981.

MLA (9th ed.) Citation

Whitlock, Ralph. Birds at Risk: A Comprehensive World-survey of Threatened Species. Moonraker Press, 1981.