APA aipamena

Collar, N. J., Mallari, N. A. D., Tabaranza, B. R. J., & Crosby, M. J. (1999). Threatened birds of the Philippines: The Haribon Foundation/Bird Life International Red Data Book. Bookmark, Inc.

Chicago Style aipamena

Collar, Nigel J., Neil Aldrin D. Mallari, Blas R. Jr Tabaranza, and Mike J. Crosby. Threatened Birds of the Philippines: The Haribon Foundation/Bird Life International Red Data Book. Makati City: Bookmark, Inc, 1999.

MLA aipamena

Collar, Nigel J., et al. Threatened Birds of the Philippines: The Haribon Foundation/Bird Life International Red Data Book. Bookmark, Inc, 1999.