APA引文

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

芝加哥风格引文

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

MLA引文

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

警告：这些引文格式不一定是100％准确.