Cita APA (7th ed.)

Wildlife Conservation Society of the Philippines, World Conservation Monitoring Centre, & Friends of the Zoos. (1997). Philippine red data book. Bookmark.

Cita Chicago (17th ed.)

Wildlife Conservation Society of the Philippines, World Conservation Monitoring Centre, i Friends of the Zoos. Philippine Red Data Book. Makati City, Philippines: Bookmark, 1997.

Cita MLA (9th ed.)

Wildlife Conservation Society of the Philippines, et al. Philippine Red Data Book. Bookmark, 1997.