Fletcher, J., & Jump, J. D. (1948). Rollo, duke of Normandy or the bloody brother : a tragedy: Attributed to J. Fletcher, George Chapman, Ben Jonson and Philip Massinger / Ed. by J. D. Jump. University Press of Liverpool.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Fletcher, John, و J. D. Jump. Rollo, Duke of Normandy or the Bloody Brother : A Tragedy: Attributed to J. Fletcher, George Chapman, Ben Jonson and Philip Massinger / Ed. by J. D. Jump. London: University Press of Liverpool, 1948.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Fletcher, John, و J. D. Jump. Rollo, Duke of Normandy or the Bloody Brother : A Tragedy: Attributed to J. Fletcher, George Chapman, Ben Jonson and Philip Massinger / Ed. by J. D. Jump. University Press of Liverpool, 1948.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.