Christie, A. (1983). Why didn't they ask Evans? Bantam Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रChristie, Agatha. Why Didn't They Ask Evans? Toronto ; New York: Bantam Books, 1983.
एमएलए (8वां संस्करण) प्रशस्ति पत्रChristie, Agatha. Why Didn't They Ask Evans? Bantam Books, 1983.
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