Singh, L. (2008). Trends in travel and tourism and laws. Isha Books.
Cita Chicago (17th ed.)Singh, L.K. Trends in Travel and Tourism and Laws. Delhi: Isha Books, 2008.
Cita MLA (9th ed.)Singh, L.K. Trends in Travel and Tourism and Laws. Isha Books, 2008.
Atenció: Aquestes cites poden no estar 100% correctes.