Wells, D. A. (1974). Saudi Arabian revenues and expenditures: The potential for foreign exchange savings. Resources for the Future ; distributed by the Johns Hopkins University Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Wells, Donald A. Saudi Arabian Revenues and Expenditures: The Potential for Foreign Exchange Savings. Washington : Baltimore: Resources for the Future ; distributed by the Johns Hopkins University Press, 1974.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Wells, Donald A. Saudi Arabian Revenues and Expenditures: The Potential for Foreign Exchange Savings. Resources for the Future ; distributed by the Johns Hopkins University Press, 1974.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.