De Ville, J. (1996). The psychology of witnessing. Ministerial Association. General Conference of Seventh-Day Adventists.
Chicago-čujuhus (17. p.)De Ville, Jard. The Psychology of Witnessing. Ministerial Association. General Conference of Seventh-Day Adventists, 1996.
MLA-čujuhus (9. p.)De Ville, Jard. The Psychology of Witnessing. Ministerial Association. General Conference of Seventh-Day Adventists, 1996.
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