APA (7 ম সংস্করণ) উদ্ধৃতি

Science Education Center University of the Philippines. (1972). Environmental science 1 : pupil's guide part 2: Student's text (Revised experimental edition.). Science Education Center University of the Philippines.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Science Education Center University of the Philippines. Environmental Science 1 : Pupil's Guide Part 2: Student's Text. Revised experimental edition. Quezon City: Science Education Center University of the Philippines, 1972.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

Science Education Center University of the Philippines. Environmental Science 1 : Pupil's Guide Part 2: Student's Text. Revised experimental edition. Science Education Center University of the Philippines, 1972.