Grebel, R. (1997). Contemporary's make your mark in the hotel industry. Chicago: Contemporary Books.
Trích dẫn kiểu ChicagoGrebel, Rosemary. Contemporary's Make Your Mark in the Hotel Industry. Chicago: Contemporary Books, 1997.
Deismireacht MLAGrebel, Rosemary. Contemporary's Make Your Mark in the Hotel Industry. Chicago: Contemporary Books, 1997.
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