O'Sullivan, H. (1991). Trends in mission: Toward the third millennium: essays in celebration of twenty-five years of SEDOS. Orbis Books.
芝加哥风格引文O'Sullivan, Helene. Trends in Mission: Toward the Third Millennium: Essays in Celebration of Twenty-five Years of SEDOS. Ney York: Orbis Books, 1991.
MLA引文O'Sullivan, Helene. Trends in Mission: Toward the Third Millennium: Essays in Celebration of Twenty-five Years of SEDOS. Orbis Books, 1991.
警告：这些引文格式不一定是100％准确.