Weinshenker, B., Rice, G., Noseworthy, J., Carriere, W., Baskerville, J., & Ebers, G. (1991). The natural history of multiple sclerosis: A geographically based study. 4. Applications to planning and interpretation of clinical therapeutic trials.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Weinshenker, BG, G. Rice, J. Noseworthy, W. Carriere, J. Baskerville, و G. Ebers. The Natural History of Multiple Sclerosis: A Geographically Based Study. 4. Applications to Planning and Interpretation of Clinical Therapeutic Trials. 1991.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Weinshenker, BG, et al. The Natural History of Multiple Sclerosis: A Geographically Based Study. 4. Applications to Planning and Interpretation of Clinical Therapeutic Trials. 1991.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.