Fenton, T. P., & Heffron, M. J. (1984). Third World resource directory. Orbis Books.
芝加哥风格引文Fenton, Thomas P., 与 Mary J. Heffron. Third World Resource Directory. Maryknoll, N.Y: Orbis Books, 1984.
MLA引文Fenton, Thomas P., 与 Mary J. Heffron. Third World Resource Directory. Orbis Books, 1984.
警告：这些引文格式不一定是100％准确.