Blake, N. (1964). The sad variety. Published for the Crime Club by Collins.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBlake, Nicholas. The Sad Variety. London: Published for the Crime Club by Collins, 1964.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBlake, Nicholas. The Sad Variety. Published for the Crime Club by Collins, 1964.
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