APA (7e ed.) Bronvermelding

Paul VI, P. (1968). On the regulation of birth = Humanae vitae: Encyclical letter. Washington, D.C..

Chicago (17e ed.) Bronvermelding

Paul VI, Pope. On the Regulation of Birth = Humanae Vitae: Encyclical Letter. Washington, D.C., 1968.

MLA (8e ed.) Bronvermelding

Paul VI, Pope. On the Regulation of Birth = Humanae Vitae: Encyclical Letter. Washington, D.C., 1968.

Let op: Deze citaties zijn niet altijd 100% accuraat.