APA (7th ed.) Citation

Ayer, J. C. (1970). A source book for ancient church history: From the apostolic age to the close of the conciliar period. AMS Press.

Chicago Style (17th ed.) Citation

Ayer, Joseph Cullen. A Source Book for Ancient Church History: From the Apostolic Age to the Close of the Conciliar Period. New York: AMS Press, 1970.

MLA (9th ed.) Citation

Ayer, Joseph Cullen. A Source Book for Ancient Church History: From the Apostolic Age to the Close of the Conciliar Period. AMS Press, 1970.