Kreck, L. A. (1978). Operational problem solving for the hotel and restaurant industry: The Pullman method. CBI Pub. Co..
Cita Chicago (17th ed.)Kreck, Lothar A. Operational Problem Solving for the Hotel and Restaurant Industry: The Pullman Method. Boston: CBI Pub. Co., 1978.
Cita MLA (8th ed.)Kreck, Lothar A. Operational Problem Solving for the Hotel and Restaurant Industry: The Pullman Method. CBI Pub. Co., 1978.
Atenció: Aquestes cites poden no estar 100% correctes.