APA (7th ed.) Citation

Catholic Church. Pope,1963-1978 (Paulus VI). (1968). Encyclical letter, On the regulation of birth. A.C.T.S..

Chicago Style (17th ed.) Citation

Catholic Church. Pope,1963-1978 (Paulus VI). Encyclical Letter, On the Regulation of Birth. Melbourne: A.C.T.S., 1968.

MLA (8th ed.) Citation

Catholic Church. Pope,1963-1978 (Paulus VI). Encyclical Letter, On the Regulation of Birth. A.C.T.S., 1968.

Warning: These citations may not always be 100% accurate.