Zakaria, H. (2001). A study on adopting international convention on oil pollution preparedness, response and co-operation, protocol for hazardous and noxious substances(oprc-hns).
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Zakaria, Hasbullah. A Study on Adopting International Convention on Oil Pollution Preparedness, Response and Co-operation, Protocol for Hazardous and Noxious Substances(oprc-hns). 2001.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Zakaria, Hasbullah. A Study on Adopting International Convention on Oil Pollution Preparedness, Response and Co-operation, Protocol for Hazardous and Noxious Substances(oprc-hns). 2001.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.