APA

Mackin T., . (1982). What is marriage?. New York: Paulist Press.

Chicago

Mackin Theodore, . 1982. What is marriage?. New York: Paulist Press.

Harvard

Mackin T., . (1982). What is marriage?. New York: Paulist Press.

MLA

Mackin Theodore, . What is marriage?. New York: Paulist Press. 1982.