APA-viite (7. p.)

Vermeersch, A. (1932). What is marriage?: A catechism arranged according to the encyclical "Casti connubii" of Pope Pius XI. America Press.

Chicago-viite (17. p.)

Vermeersch, A. What Is Marriage?: A Catechism Arranged According to the Encyclical "Casti Connubii" of Pope Pius XI. New York: America Press, 1932.

MLA-viite (8. p.)

Vermeersch, A. What Is Marriage?: A Catechism Arranged According to the Encyclical "Casti Connubii" of Pope Pius XI. America Press, 1932.