APA-referens (7:e uppl.)

Paul VI, P. (1965). On vocations. National Catholic Welfare Conference.

Chicago-referens (17:e uppl.)

Paul VI, Pope. On Vocations. Washington, D.C.: National Catholic Welfare Conference, 1965.

MLA-referens (8:e uppl.)

Paul VI, Pope. On Vocations. National Catholic Welfare Conference, 1965.