Singh, L. (2008). Marketing in service industry - airline, travel, tours and hotel. ISHA Books.
Chicago-стиль цитированияSingh, L.K. Marketing in Service Industry - Airline, Travel, Tours and Hotel. New Delhi: ISHA Books, 2008.
MLA-цитированиеSingh, L.K. Marketing in Service Industry - Airline, Travel, Tours and Hotel. ISHA Books, 2008.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.