APA استشهاد

Singh, L. (2008). Marketing in service industry: Airline, travel, tours and hotel. Isha books.

استشهاد بنمط شيكاغو

Singh, L.K. Marketing in Service Industry: Airline, Travel, Tours and Hotel. New Delhi: Isha books, 2008.

MLA استشهاد

Singh, L.K. Marketing in Service Industry: Airline, Travel, Tours and Hotel. Isha books, 2008.