Ahmad, M. H. (2018). Positive smoker identity: A development and validation of smoking cessation instrument, and its associated factors.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ahmad, Mohd Hanief. Positive Smoker Identity: A Development and Validation of Smoking Cessation Instrument, and Its Associated Factors. 2018.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Ahmad, Mohd Hanief. Positive Smoker Identity: A Development and Validation of Smoking Cessation Instrument, and Its Associated Factors. 2018.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.