REFERENCE
- Eyfortravel. (2010, February 11). 38.81pc of visits to the online travel industry went to the top 10 sites. http://www.eyefortravel.com/news/north-america/38-81pc-visits-online-travel-industry-went-top-10-sites (http://www.eyefortravel.com/news/north-america/38-81pc-visits-online-travel-industry-went-top-10-sites) (Accessed: 30 May 2010 ).