Negi, J. (1982). Tourism & hoteliering: A world-wide industry. Gitanjali Pub.
Chicago Style aipamenaNegi, J.M.S. Tourism & Hoteliering: A World-wide Industry. New Delhi: Gitanjali Pub, 1982.
MLA aipamenaNegi, J.M.S. Tourism & Hoteliering: A World-wide Industry. Gitanjali Pub, 1982.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.