Engel, J. F. (1979). Contemporary christian communications: Its theory and practice. Thomas Nelson.
Chicago-referens (17:e uppl.)Engel, James F. Contemporary Christian Communications: Its Theory and Practice. Nashville: Thomas Nelson, 1979.
MLA-referens (9:e uppl.)Engel, James F. Contemporary Christian Communications: Its Theory and Practice. Thomas Nelson, 1979.
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