Dyfyniad APA

Nortman, D. (1972). Population and family planning programs: A factbook (4th ed.). Population Council.

Dyfyniad Arddull Chicago

Nortman, Dorothy. Population and Family Planning Programs: A Factbook. 4th ed. New York: Population Council, 1972.

Dyfyniad MLA

Nortman, Dorothy. Population and Family Planning Programs: A Factbook. 4th ed. Population Council, 1972.

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