Organisation for Economic Co-operation and Deverlopment. (1973). Oil: The Present Situation and Future Prospects. Paris: Oecd Publications.
استشهاد بنمط شيكاغوOrganisation for Economic Co-operation and Deverlopment. Oil: The Present Situation and Future Prospects. Paris: Oecd Publications, 1973.
MLA استشهادOrganisation for Economic Co-operation and Deverlopment. Oil: The Present Situation and Future Prospects. Paris: Oecd Publications, 1973.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.