APA (7th ed.) Citation

Teo Aik Cher. (2012). Why Worry?Be Happy?: A Teenager's Guide to Achieving Joy and Happiness. ARMOUR Publishing House.

Chicago Style (17th ed.) Citation

Teo Aik Cher. Why Worry?Be Happy?: A Teenager's Guide to Achieving Joy and Happiness. Singapore: ARMOUR Publishing House, 2012.

MLA (9th ed.) Citation

Teo Aik Cher. Why Worry?Be Happy?: A Teenager's Guide to Achieving Joy and Happiness. ARMOUR Publishing House, 2012.

Warning: These citations may not always be 100% accurate.