Lockwood A. (2001). Tourism and hospitality in the 21st century.
Chicago Style aipamenaLockwood A. Tourism and Hospitality in the 21st Century. Routledge,London, 2001.
MLA aipamenaLockwood A. Tourism and Hospitality in the 21st Century. 2001.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.