Stanford Research Institute & American University (Washington, D.C.) Foreign Area Studies. (1971). Area handbook for the Peripheral States of the Arabian Peninsula: Prepared for the American University. the Supt. of Docs., U.S. Govt. Print. Off.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Stanford Research Institute و D.C.) Foreign Area Studies American University (Washington. Area Handbook for the Peripheral States of the Arabian Peninsula: Prepared for the American University. Washington: the Supt. of Docs., U.S. Govt. Print. Off, 1971.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Stanford Research Institute و D.C.) Foreign Area Studies American University (Washington. Area Handbook for the Peripheral States of the Arabian Peninsula: Prepared for the American University. the Supt. of Docs., U.S. Govt. Print. Off, 1971.