Cita APA (7th ed.)

Costello, M. A., & Madigan, F. C. (1979). Current fertility. Mindanao Center for Population Studies, Research Institute for Mindanao Culture, Xavier University.

Cita Chicago (17th ed.)

Costello, Michael A., i Francis C. Madigan. Current Fertility. Cagayan de Oro City: Mindanao Center for Population Studies, Research Institute for Mindanao Culture, Xavier University, 1979.

Cita MLA (9th ed.)

Costello, Michael A., i Francis C. Madigan. Current Fertility. Mindanao Center for Population Studies, Research Institute for Mindanao Culture, Xavier University, 1979.