Batty, C. (1981). An introduction to the nineteenth edition of the Dewey Decimal classification. Clive Bingley.
Chicago-viite (17. p.)Batty, C.D. An Introduction to the Nineteenth Edition of the Dewey Decimal Classification. London: Clive Bingley, 1981.
MLA-viite (9. p.)Batty, C.D. An Introduction to the Nineteenth Edition of the Dewey Decimal Classification. Clive Bingley, 1981.
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