Não informado. Bibliography on smoking and health. National Library of Medicine, National Clearing House for Smoking and.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Não informado. Bibliography on Smoking and Health. Washington: National Library of Medicine, National Clearing House for Smoking and.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Não informado. Bibliography on Smoking and Health. National Library of Medicine, National Clearing House for Smoking and.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.