Paul VI, P. (1968). On the regulation of birth = Humanae vitae: Encyclical letter. Washington, D.C..
Lua i Stíl Chicago (17ú heag.)Paul VI, Pope. On the Regulation of Birth = Humanae Vitae: Encyclical Letter. Washington, D.C., 1968.
Lua MLA (8ú heag.)Paul VI, Pope. On the Regulation of Birth = Humanae Vitae: Encyclical Letter. Washington, D.C., 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.