Παραπομπή APA

Singh, L. (2008). Marketing in service industry - airline, travel, tours and hotel. ISHA Books.

Παραπομπή Chicago Style

Singh, L.K. Marketing in Service Industry - Airline, Travel, Tours and Hotel. New Delhi: ISHA Books, 2008.

Παραπομπή MLA

Singh, L.K. Marketing in Service Industry - Airline, Travel, Tours and Hotel. ISHA Books, 2008.