Siewert, A. J., & Welliver, D. (1999). Directory of schools and professors of mission and evangelism in the USA and Canada, 1999-2001. Billy Graham Center.
芝加哥风格引文Siewert, A. John, 与 Dotsey Welliver. Directory of Schools and Professors of Mission and Evangelism in the USA and Canada, 1999-2001. Wheaton: Billy Graham Center, 1999.
MLA引文Siewert, A. John, 与 Dotsey Welliver. Directory of Schools and Professors of Mission and Evangelism in the USA and Canada, 1999-2001. Billy Graham Center, 1999.
警告：这些引文格式不一定是100％准确.