Dyfyniad APA

Bruce, J., & Schearer, S. B. (1979). Contraceptives and common sense: Conventional methods reconsidered. Population Council.

Dyfyniad Arddull Chicago

Bruce, Judith, and S. Bruce Schearer. Contraceptives and Common Sense: Conventional Methods Reconsidered. New York: Population Council, 1979.

Dyfyniad MLA

Bruce, Judith, and S. Bruce Schearer. Contraceptives and Common Sense: Conventional Methods Reconsidered. Population Council, 1979.

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