Dyfyniad APA

Bromwich, P. (1990). Contraception: The facts (2nd ed.). Oxford University Press.

Dyfyniad Arddull Chicago

Bromwich, Peter. Contraception: The Facts. 2nd ed. Oxford [England] New York: Oxford University Press, 1990.

Dyfyniad MLA

Bromwich, Peter. Contraception: The Facts. 2nd ed. Oxford University Press, 1990.

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