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.
Citace podle Chicago (17th ed.)Siewert, A. John, a Dotsey Welliver. Directory of Schools and Professors of Mission and Evangelism in the USA and Canada, 1999-2001. Wheaton: Billy Graham Center, 1999.
Citace podle MLA (9th ed.)Siewert, A. John, a Dotsey Welliver. Directory of Schools and Professors of Mission and Evangelism in the USA and Canada, 1999-2001. Billy Graham Center, 1999.
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