Kaul, V. (1994). Tourism and the economy. har-Anand.
Lua i Stíl Chicago (17ú heag.)Kaul, Virendra. Tourism and the Economy. New Delhi: har-Anand, 1994.
Lua MLA (9ú heag.)Kaul, Virendra. Tourism and the Economy. har-Anand, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.