Não informado. (1972). Current literature in family planning. Planned Parenthood Federation of America.
Chicagoスタイル(17版)引用形式Não informado. Current Literature in Family Planning. New York: Planned Parenthood Federation of America, 1972.
MLA(8版)引用形式Não informado. Current Literature in Family Planning. Planned Parenthood Federation of America, 1972.
警告: この引用は必ずしも正確ではありません.