Nortman, D. L. (1978). Birth rates and birth control practice: Relations based on the Computer Models TABRAP and CONVERSE. The Population Council.
Cita Chicago (17th ed.)Nortman, Dorothy L. Birth Rates and Birth Control Practice: Relations Based on the Computer Models TABRAP and CONVERSE. New York: The Population Council, 1978.
Cita MLA (9th ed.)Nortman, Dorothy L. Birth Rates and Birth Control Practice: Relations Based on the Computer Models TABRAP and CONVERSE. The Population Council, 1978.
Atenció: Aquestes cites poden no estar 100% correctes.