APA-referens (7:e uppl.)
Engel, J. F. (1975). Contemporary Christian communications: Its theory and practice. Thomas Nelson Publishers.
Chicago-referens (17:e uppl.)
Engel, James F. Contemporary Christian Communications: Its Theory and Practice. Nashville: Thomas Nelson Publishers, 1975.
MLA-referens (9:e uppl.)
Engel, James F. Contemporary Christian Communications: Its Theory and Practice. Thomas Nelson Publishers, 1975.
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