APA (7th ed.) Citation

Dewey, M. (2011). Dewey Decimal Classification (23rd.). OCLC.

Chicago Style (17th ed.) Citation

Dewey, Melvil. Dewey Decimal Classification. 23rd. OCLC, 2011.

MLA (9th ed.) Citation

Dewey, Melvil. Dewey Decimal Classification. 23rd. OCLC, 2011.

Warning: These citations may not always be 100% accurate.