Παραπομπή σε μορφή APA (7η εκδ.)

O'Sullivan, H. (1991). Trends in mission: Toward the third millennium: essays in celebration of twenty-five years of SEDOS. Orbis Books.

Παραπομπή σε μορφή Chicago (17η εκδ.)

O'Sullivan, Helene. Trends in Mission: Toward the Third Millennium: Essays in Celebration of Twenty-five Years of SEDOS. Ney York: Orbis Books, 1991.

Παραπομπή σε μορφή MLA (9th εκδ.)

O'Sullivan, Helene. Trends in Mission: Toward the Third Millennium: Essays in Celebration of Twenty-five Years of SEDOS. Orbis Books, 1991.