Cita APA (7th ed.)

Alfonso, A. B., Layo, L. L., & Bulatao, R. A. (1980). Culture and fertility: The case of the Philippines. Institute of Southeast Asian Studies.

Cita Chicago (17th ed.)

Alfonso, Amelia B., Leda L. Layo, i Rodolfo A. Bulatao. Culture and Fertility: The Case of the Philippines. Singapore: Institute of Southeast Asian Studies, 1980.

Cita MLA (9th ed.)

Alfonso, Amelia B., et al. Culture and Fertility: The Case of the Philippines. Institute of Southeast Asian Studies, 1980.