Ewert, A. An Instance of Cyclical Recurrence in French Literary History: Alfred Ewert. Literary history and literary criticism : acta of the Ninth Congress. held at New York University, Aug. 25 to 31, 1963.(1966).
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ewert, Alfred. "An Instance of Cyclical Recurrence in French Literary History: Alfred Ewert." Literary History and Literary Criticism : Acta of the Ninth Congress. Held at New York University, Aug. 25 to 31, 1963.(1966) .
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Ewert, Alfred. "An Instance of Cyclical Recurrence in French Literary History: Alfred Ewert." Literary History and Literary Criticism : Acta of the Ninth Congress. Held at New York University, Aug. 25 to 31, 1963.(1966), .
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.