Nortman, D. (1972). Population and family planning programs: A factbook (4th ed.). Population Council.
Citación estilo ChicagoNortman, Dorothy. Population and Family Planning Programs: A Factbook. 4th ed. New York: Population Council, 1972.
Cita MLANortman, Dorothy. Population and Family Planning Programs: A Factbook. 4th ed. Population Council, 1972.
Warning: These citations may not always be 100% accurate.