(2009). Worldwide hospitality and tourism themes. Emerald Group Publishing.
Chicago Style aipamenaWorldwide Hospitality and Tourism Themes. [Bingley, U.K.]: Emerald Group Publishing, 2009.
MLA aipamenaWorldwide Hospitality and Tourism Themes. Emerald Group Publishing, 2009.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.