Bromwich, P. (1990). Contraception: The facts (2nd ed.). Oxford University Press.
Cita Chicago (17th ed.)Bromwich, Peter. Contraception: The Facts. 2nd ed. Oxford [England] New York: Oxford University Press, 1990.
Cita MLA (8th ed.)Bromwich, Peter. Contraception: The Facts. 2nd ed. Oxford University Press, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.