Backer, E. (1995). Computer Assisted Reasoning In Cluster Analysis Eric Backer. Prentice-Hall.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBacker, Eric. Computer Assisted Reasoning In Cluster Analysis Eric Backer. Prentice-Hall, 1995.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBacker, Eric. Computer Assisted Reasoning In Cluster Analysis Eric Backer. Prentice-Hall, 1995.
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