1. Canadian Department of Foreign Affairs and International Trade. http://voyage.dfait-maeci.gc.ca/destinations/menu_e.htm
2. Australian travel and tourism law;Cordato,1999
3. Holiday companies improve their health advice;Cossar;British Medical Journal,1993
4. Tourists' health — Could the travel industry do more?;Dawood;Tourism Management,1989
5. Department of Foreign Affairs and Trade (DFAT). http://www.dfat.gov.au/travel/index.html