Paul VI, P. (1967). Apostolic constitution on indulgences. United States Catholic Conference.
Chicago-viite (17. p.)Paul VI, Pope. Apostolic Constitution on Indulgences. Washington, D.C.: United States Catholic Conference, 1967.
MLA-viite (8. p.)Paul VI, Pope. Apostolic Constitution on Indulgences. United States Catholic Conference, 1967.
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