APA (7e ed.) Bronvermelding

John Paul II, P. (1987). Unity in the work of service. National Conference of Catholic Bishops, United States Catholic Conferences.

Chicago (17e ed.) Bronvermelding

John Paul II, Pope. Unity in the Work of Service. Washington, D.C.: National Conference of Catholic Bishops, United States Catholic Conferences, 1987.

MLA (8e ed.) Bronvermelding

John Paul II, Pope. Unity in the Work of Service. National Conference of Catholic Bishops, United States Catholic Conferences, 1987.