Shipman, G. A. (1962). Medical service corporations in the State of Washington: A study of the administration of physician-sponsored pre-paid medical care. Harvard University Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Shipman, George A. Medical Service Corporations in the State of Washington: A Study of the Administration of Physician-sponsored Pre-paid Medical Care. Cambridge: Harvard University Press, 1962.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Shipman, George A. Medical Service Corporations in the State of Washington: A Study of the Administration of Physician-sponsored Pre-paid Medical Care. Harvard University Press, 1962.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.