(1970). My Friends Pictured Within: The subjects of the Enigma Variations as portrayed in contemporary photographs and Elgar's manuscripts. Novello.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMy Friends Pictured Within: The Subjects of the Enigma Variations as Portrayed in Contemporary Photographs and Elgar's Manuscripts. Borough Green, Sevenoaks, Kent: Novello, 1970.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMy Friends Pictured Within: The Subjects of the Enigma Variations as Portrayed in Contemporary Photographs and Elgar's Manuscripts. Novello, 1970.
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