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.
Lua i Stíl Chicago (17ú heag.)Cruz, Azucena C., Nenita M. Dayrit, agus Guafdalupe R. Yap. Content Analysis of Biology for Philippine High Schools: The Relationships of Living Things, Textbook and Laboratory Manual. Quezon City, 1974.
Lua MLA (9ú heag.)Cruz, Azucena C., et al. Content Analysis of Biology for Philippine High Schools: The Relationships of Living Things, Textbook and Laboratory Manual. 1974.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.