Abbey,James. Hospitality sales & marketing (4.). The American Hotel & lodging Education Institute.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAbbey,James. Hospitality Sales & Marketing. 4. Michigan: The American Hotel & lodging Education Institute.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAbbey,James. Hospitality Sales & Marketing. 4. The American Hotel & lodging Education Institute.
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