APA (7th ed.) Citation

(1951). Decimal classification; devised by Melvil Dewey.

Chicago Style (17th ed.) Citation

Decimal Classification; Devised by Melvil Dewey. 1951.

MLA (9th ed.) Citation

Decimal Classification; Devised by Melvil Dewey. 1951.

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