Harthy, A. A. (1999). Drug abuse in the Gulf States, Oman: An evaluation of the death penalty as a deterrent. University of Manchester.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Harthy, Abdullah Al-. Drug Abuse in the Gulf States, Oman: An Evaluation of the Death Penalty as a Deterrent. Manchester: University of Manchester, 1999.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Harthy, Abdullah Al-. Drug Abuse in the Gulf States, Oman: An Evaluation of the Death Penalty as a Deterrent. University of Manchester, 1999.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.