Kreck, L. A. (1978). Operational problem solving for the hotel and restaurant industry: The Pullman method. CBI Pub.
Chicago Style (17. basım) AtıfKreck, Lothar A. Operational Problem Solving for the Hotel and Restaurant Industry: The Pullman Method. Boston: CBI Pub, 1978.
MLA (9th ed.) AtıfKreck, Lothar A. Operational Problem Solving for the Hotel and Restaurant Industry: The Pullman Method. CBI Pub, 1978.
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