Pietrek M. (1996). Dewey Decimal Classification Vol. 1 Introduction Table (21.). Forest Press.
Chicago Edition CitationPietrek M. Dewey Decimal Classification Vol. 1 Introduction Table. 21. USA: Forest Press, 1996.
MLA Edition CitationPietrek M. Dewey Decimal Classification Vol. 1 Introduction Table. 21. Forest Press, 1996.
Warning: These citations may not always be 100% accurate.