FIELDS, R. (2021). Drugs in perspective: Causes, assessment, family, prevention, intervention, and treatment. McGraw Hill.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)FIELDS, Richard. Drugs in Perspective: Causes, Assessment, Family, Prevention, Intervention, and Treatment. McGraw Hill, 2021.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)FIELDS, Richard. Drugs in Perspective: Causes, Assessment, Family, Prevention, Intervention, and Treatment. McGraw Hill, 2021.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.