APA (7 ম সংস্করণ) উদ্ধৃতি

Payawal, P. C., Esmundo, R. R., & Pagulayan, R. C. (1999). Life and the planet earth. Learning Resource Center, University of the Philippines.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Payawal, Pacifico C., Rosalinda R. Esmundo, এবং Roberto C. Pagulayan. Life and the Planet Earth. Diliman, Quezon City: Learning Resource Center, University of the Philippines, 1999.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

Payawal, Pacifico C., et al. Life and the Planet Earth. Learning Resource Center, University of the Philippines, 1999.