Singh, L. (2008). Trends in travel and tourism and laws. Isha Books.
Chicago-čujuhus (17. p.)Singh, L.K. Trends in Travel and Tourism and Laws. Delhi: Isha Books, 2008.
MLA-čujuhus (9. p.)Singh, L.K. Trends in Travel and Tourism and Laws. Isha Books, 2008.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.