APA (7e ed.) Bronvermelding

Catholic Church. Pope (1978-2005 : John Paul II) & John Paul II, P. (1988). On the occasion of the Marian year: Letter, May 22, 1988. Office of Publishing and Promotion Services, United States Catholic Conference.

Chicago (17e ed.) Bronvermelding

Catholic Church. Pope (1978-2005 : John Paul II) en Pope John Paul II. On the Occasion of the Marian Year: Letter, May 22, 1988. Washington, D.C.: Office of Publishing and Promotion Services, United States Catholic Conference, 1988.

MLA (8e ed.) Bronvermelding

Catholic Church. Pope (1978-2005 : John Paul II) en Pope John Paul II. On the Occasion of the Marian Year: Letter, May 22, 1988. Office of Publishing and Promotion Services, United States Catholic Conference, 1988.