Ewert, A. (1961). Studies in medival French, presented to Alfred Ewert in honour of his seventieth birthday. Clarendon Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ewert, ALfred. Studies in Medival French, Presented to Alfred Ewert in Honour of His Seventieth Birthday. Oxford: Clarendon Press, 1961.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Ewert, ALfred. Studies in Medival French, Presented to Alfred Ewert in Honour of His Seventieth Birthday. Clarendon Press, 1961.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.