APA (7th ed.) Citation

Mortimer, M. Learn Dewey Decimal Classification (Edition 21). The Scarecrow Press.

Chicago Style (17th ed.) Citation

Mortimer, Mary. Learn Dewey Decimal Classification (Edition 21). Lanham, Md: The Scarecrow Press.

MLA (9th ed.) Citation

Mortimer, Mary. Learn Dewey Decimal Classification (Edition 21). The Scarecrow Press.

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