Cita APA (7th ed.)

Pullum, T. W. (1972). A comparison of recent Philippine fertility with the natural fertility model. Population Institute, University of the Philippines].

Cita Chicago (17th ed.)

Pullum, Thomas W. A Comparison of Recent Philippine Fertility with the Natural Fertility Model. [Manila: Population Institute, University of the Philippines], 1972.

Cita MLA (9th ed.)

Pullum, Thomas W. A Comparison of Recent Philippine Fertility with the Natural Fertility Model. Population Institute, University of the Philippines], 1972.