Sarngadharan, M. (2005). Tourism and sustainable economic development. New Century.
Chicago-viite (17. p.)Sarngadharan, M. Tourism and Sustainable Economic Development. New Delhi: New Century, 2005.
MLA-viite (9. p.)Sarngadharan, M. Tourism and Sustainable Economic Development. New Century, 2005.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.