- http://kids.yahoo.com/reference/world-factbook/country/sn--Singapore#economy
- http://culturecrossing.net/basics_business_student.php?id=182
- http://www.jrank.org/api/search/v2?key=e1da5b6b50cc6236c33ae32c45e58cd3c42bdfe4&q=singapore
- http://chefinyou.com/2009/11/roti-canai-recipe/
- http://www.google.com/imghp?hl=en&tab=wi