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