Bruce, J., & Schearer, S. B. (1979). Contraceptives and common sense: Conventional methods reconsidered. Population Council.
Cita Chicago Style (17a ed.)Bruce, Judith, y S. Bruce Schearer. Contraceptives and Common Sense: Conventional Methods Reconsidered. New York: Population Council, 1979.
Cita MLA (8a ed.)Bruce, Judith, y S. Bruce Schearer. Contraceptives and Common Sense: Conventional Methods Reconsidered. Population Council, 1979.
Precaución: Estas citas no son 100% exactas.