APA (7e ed.) Bronvermelding

Cruz, A. C., Dayrit, N. M., & Yap, G. R. (1974). Content analysis of biology for philippine high schools: The relationships of living things, textbook and laboratory manual.

Chicago (17e ed.) Bronvermelding

Cruz, Azucena C., Nenita M. Dayrit, en Guafdalupe R. Yap. Content Analysis of Biology for Philippine High Schools: The Relationships of Living Things, Textbook and Laboratory Manual. Quezon City, 1974.

MLA (9e ed.) Bronvermelding

Cruz, Azucena C., et al. Content Analysis of Biology for Philippine High Schools: The Relationships of Living Things, Textbook and Laboratory Manual. 1974.