Lewis, C. S., & Gomold-Smith, C. (2007). Affectionately yours, Screwtape: The devil and C.S. Lewis / C.S. Lewis ; written by Tom and Amy Dallis. Vision Media.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Lewis, C. S., و Christopher Gomold-Smith. Affectionately Yours, Screwtape: The Devil and C.S. Lewis / C.S. Lewis ; Written by Tom and Amy Dallis. Worcester, Penn.: Vision Media, 2007.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Lewis, C. S., و Christopher Gomold-Smith. Affectionately Yours, Screwtape: The Devil and C.S. Lewis / C.S. Lewis ; Written by Tom and Amy Dallis. Vision Media, 2007.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.