Olawuyi, D. (2017). Local content and procurement requirements in oil and gas contracts: Regional trends in the Middle East and North Africa. Oxford Institute for Energy Studies.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Olawuyi, D. Local Content and Procurement Requirements in Oil and Gas Contracts: Regional Trends in the Middle East and North Africa. Oxford Institute for Energy Studies, 2017.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Olawuyi, D. Local Content and Procurement Requirements in Oil and Gas Contracts: Regional Trends in the Middle East and North Africa. Oxford Institute for Energy Studies, 2017.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.