Cita APA (7th ed.)

Joaquin, A. Z., & Modelo, R. (1978). Laboratory and field manual for principles of biology. Textbook Development Committee.

Cita Chicago (17th ed.)

Joaquin, Aurora Zafra, i Romeo Modelo. Laboratory and Field Manual for Principles of Biology. Manila: Textbook Development Committee, 1978.

Cita MLA (9th ed.)

Joaquin, Aurora Zafra, i Romeo Modelo. Laboratory and Field Manual for Principles of Biology. Textbook Development Committee, 1978.