Cita APA (7th ed.)

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.

Cita Chicago (17th ed.)

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.

Cita MLA (9th ed.)

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.