Sethi, P. (1999). Strategies for the future of travel and tourism. Rajat Publications.
Lua i Stíl Chicago (17ú heag.)Sethi, Praveen. Strategies for the Future of Travel and Tourism. New Delhi: Rajat Publications, 1999.
Lua MLA (9ú heag.)Sethi, Praveen. Strategies for the Future of Travel and Tourism. Rajat Publications, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.