Jasper, D. Screening angels: "The Messenger", Durham Cathedral, 1996 / David Jasper. The art of Bill Viola.(2004).
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रJasper, David. "Screening Angels: "The Messenger", Durham Cathedral, 1996 / David Jasper." The Art of Bill Viola.(2004) .
एमएलए (8वां संस्करण) प्रशस्ति पत्रJasper, David. "Screening Angels: "The Messenger", Durham Cathedral, 1996 / David Jasper." The Art of Bill Viola.(2004), .
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