APA (7 ম সংস্করণ) উদ্ধৃতি

Collar, N., Mallari, N. A., & Tabaranza, B. R. (1999). Threatened birds of the Philippines: The Haribon Foundation/BirdLife International Red Data Book. Bookmark.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Collar, Nigel, Neil Aldrin Mallari, এবং Blas R. Tabaranza. Threatened Birds of the Philippines: The Haribon Foundation/BirdLife International Red Data Book. Makati City: Bookmark, 1999.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

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