Parshall, P. (1975). The fortress and the fire: Jesus Christ and the challenge of Islam. Gospel Literature Service.
Chicago Style (17th ed.) CitationParshall, Phil. The Fortress and the Fire: Jesus Christ and the Challenge of Islam. Bombay: Gospel Literature Service, 1975.
MLA (8th ed.) CitationParshall, Phil. The Fortress and the Fire: Jesus Christ and the Challenge of Islam. Gospel Literature Service, 1975.
Warning: These citations may not always be 100% accurate.