Wagner, R. (1960). The ring of the Nibelung / by Richard Wagner ; translated and with a foreword by Stewart Robb ; introduction by Edward Downes ; illustrations by Jim McMullan.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Wagner, Richard. The Ring of the Nibelung / by Richard Wagner ; Translated and with a Foreword by Stewart Robb ; Introduction by Edward Downes ; Illustrations by Jim McMullan. New York : E.P. Dutton, 1960.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Wagner, Richard. The Ring of the Nibelung / by Richard Wagner ; Translated and with a Foreword by Stewart Robb ; Introduction by Edward Downes ; Illustrations by Jim McMullan. 1960.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.