Grebel, R. (1997). Contemporary's make your mark in the hotel industry. Chicago: Contemporary Books.
استشهاد بنمط شيكاغوGrebel, Rosemary. Contemporary's Make Your Mark in the Hotel Industry. Chicago: Contemporary Books, 1997.
MLA استشهادGrebel, Rosemary. Contemporary's Make Your Mark in the Hotel Industry. Chicago: Contemporary Books, 1997.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.