Cullen, P., & Peter Cullen. (1997). Economics for Hospitality Management. London: Thomson.
Trích dẫn kiểu ChicagoCullen, Peter, và Peter Cullen. Economics for Hospitality Management. London: Thomson, 1997.
Deismireacht MLACullen, Peter, và Peter Cullen. Economics for Hospitality Management. London: Thomson, 1997.
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