توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

(1970). My Friends Pictured Within: The subjects of the Enigma Variations as portrayed in contemporary photographs and Elgar's manuscripts. Novello.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

My Friends Pictured Within: The Subjects of the Enigma Variations as Portrayed in Contemporary Photographs and Elgar's Manuscripts. Borough Green, Sevenoaks, Kent: Novello, 1970.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

My Friends Pictured Within: The Subjects of the Enigma Variations as Portrayed in Contemporary Photographs and Elgar's Manuscripts. Novello, 1970.