University of the Philippines, Q. C. S. E. C. H. S. S. 2. W. G. (1978). High school science 2 : living things and their environment: Rosalina R. Villavicencio. Textbook Board, Department of Education and Culture.
Chicago Style (17th ed.) CitationUniversity of the Philippines, Quezon City. Science Education Center. High School Science 2 Work Group. High School Science 2 : Living Things and Their Environment: Rosalina R. Villavicencio. Makati: Textbook Board, Department of Education and Culture, 1978.
MLA (9th ed.) CitationUniversity of the Philippines, Quezon City. Science Education Center. High School Science 2 Work Group. High School Science 2 : Living Things and Their Environment: Rosalina R. Villavicencio. Textbook Board, Department of Education and Culture, 1978.