Bal, P. (2012). Emerging trends in tourism and hospitality marketing. Cyber tech.
Chicago Style aipamenaBal, P.K. Emerging Trends in Tourism and Hospitality Marketing. New Delhi: Cyber tech, 2012.
MLA aipamenaBal, P.K. Emerging Trends in Tourism and Hospitality Marketing. Cyber tech, 2012.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.