(1987). Barrier contraceptives and spermicides: Their role in family planning care. World Health Organization.
Citação do estilo Chicago (17ª ed.)Barrier Contraceptives and Spermicides: Their Role in Family Planning Care. Geneva: World Health Organization, 1987.
Citação MLA (9ª ed.)Barrier Contraceptives and Spermicides: Their Role in Family Planning Care. World Health Organization, 1987.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.