Cullen, P. (1997). Economics for hospitality management. London: International Thomson Business Press.
Chicago Style aipamenaCullen, Peter. Economics for Hospitality Management. London: International Thomson Business Press, 1997.
MLA aipamenaCullen, Peter. Economics for Hospitality Management. London: International Thomson Business Press, 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.