Engel, J. F. (1979). Contemporary christian communications: Its theory and practice. Thomas Nelson.
Cita Chicago (17th ed.)Engel, James F. Contemporary Christian Communications: Its Theory and Practice. Nashville: Thomas Nelson, 1979.
Cita MLA (9th ed.)Engel, James F. Contemporary Christian Communications: Its Theory and Practice. Thomas Nelson, 1979.
Atenció: Aquestes cites poden no estar 100% correctes.