Ng, C. K., Goh, R. C., Tan, S., & Sivakumaran, B. (2008). Behaviours of adolescent smokers in Singapore.
استشهاد بنمط شيكاغوNg, Chee Koon., Regina Caiping Goh, Shiyun Tan, و Bharadhwaj Sivakumaran. Behaviours of Adolescent Smokers in Singapore. 2008.
MLA استشهادNg, Chee Koon., Regina Caiping Goh, Shiyun Tan, و Bharadhwaj Sivakumaran. Behaviours of Adolescent Smokers in Singapore. 2008.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.