Underwood, A. C. (1925). Conversion: Christian and non-Christian; a comparative and psychological study. The Macmillan company.
Čikaški stil citiranja (17. izdanje)Underwood, A. C. Conversion: Christian and Non-Christian; a Comparative and Psychological Study. New York: The Macmillan company, 1925.
MLA način citiranja (8. izdanje)Underwood, A. C. Conversion: Christian and Non-Christian; a Comparative and Psychological Study. The Macmillan company, 1925.
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