APA (7th ed.) Citation

OSBORN & DEWEY. (1991). Dewey Decimal Classification: A study manual (20th ed.). Libraries Unlimited.

Chicago Style (17th ed.) Citation

OSBORN and DEWEY. Dewey Decimal Classification: A Study Manual. 20th ed. Englewood: Libraries Unlimited, 1991.

MLA (8th ed.) Citation

OSBORN and DEWEY. Dewey Decimal Classification: A Study Manual. 20th ed. Libraries Unlimited, 1991.

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