Wildlife Conservation Society of the Philippines, World Conservation Monitoring Centre, & Friends of the Zoos. (1997). Philippine red data book. Bookmark.
Citace podle Chicago (17th ed.)Wildlife Conservation Society of the Philippines, World Conservation Monitoring Centre, a Friends of the Zoos. Philippine Red Data Book. Makati City, Philippines: Bookmark, 1997.
Citace podle MLA (9th ed.)Wildlife Conservation Society of the Philippines, et al. Philippine Red Data Book. Bookmark, 1997.
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