Curran, J., & Christie, A. (2009). Agatha Christie's secret notebooks: Fifty years of mysteries in the making. Harper.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCurran, John, और Agatha Christie. Agatha Christie's Secret Notebooks: Fifty Years of Mysteries in the Making. New York: Harper, 2009.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCurran, John, और Agatha Christie. Agatha Christie's Secret Notebooks: Fifty Years of Mysteries in the Making. Harper, 2009.
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