APA (7th ed.) Zitazioa
Harris, P. (2011). Profit planning: For hospitality and tourism (3rd rev. ed.). Goodfellow Publishers Ltd..
Chicago Style (17th ed.) Zitazioa
Harris, Peter. Profit Planning: For Hospitality and Tourism. 3rd rev. ed. Oxford: Goodfellow Publishers Ltd., 2011.
MLA (9th ed.) Zitazioa
Harris, Peter. Profit Planning: For Hospitality and Tourism. 3rd rev. ed. Goodfellow Publishers Ltd., 2011.
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