Osman, A. (2007). Prevalence of Smoking among Secondary School Students and its Associated Factors in the District of Kuantan, Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Osman, Azlan. Prevalence of Smoking Among Secondary School Students and Its Associated Factors in the District of Kuantan, Malaysia. 2007.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Osman, Azlan. Prevalence of Smoking Among Secondary School Students and Its Associated Factors in the District of Kuantan, Malaysia. 2007.
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