Singh, R. (1994). Tourism today: Structure, marketing and profile, Vol.3.
Chicago Style aipamenaSingh, Ratandeep. Tourism Today: Structure, Marketing and Profile, Vol.3. Kanishka Publishers Distributors: New Delhi, 1994.
MLA aipamenaSingh, Ratandeep. Tourism Today: Structure, Marketing and Profile, Vol.3. 1994.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.