Dyfyniad APA

Bulatao, R. A., & Casterline, J. B. (2001). Global fertility transition. Population Council.

Dyfyniad Arddull Chicago

Bulatao, Rodolfo A., and John B. Casterline. Global Fertility Transition. New York: Population Council, 2001.

Dyfyniad MLA

Bulatao, Rodolfo A., and John B. Casterline. Global Fertility Transition. Population Council, 2001.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.