Cita APA

Tietze, C. 1., & Lewit, S. (1981). Abortion in the seventies. New York, New York: The Population Council.

Citación estilo Chicago

Tietze, Christopher 1908-1984, y Sarah Lewit. Abortion in the Seventies. New York, New York: The Population Council, 1981.

Cita MLA

Tietze, Christopher 1908-1984, y Sarah Lewit. Abortion in the Seventies. New York, New York: The Population Council, 1981.

Precaución: Estas citas no son 100% exactas.