APA (7th ed.) Citation

Dewey, M., Fox, V., & Kyrios, A. (2020). Dewey Decimal Classification 2020 Volume 2 (23rd.). OCLC Inc.

Chicago Style (17th ed.) Citation

Dewey, Melvil, Violet Fox, and Alex Kyrios. Dewey Decimal Classification 2020 Volume 2. 23rd. Dublin: OCLC Inc, 2020.

MLA (9th ed.) Citation

Dewey, Melvil, et al. Dewey Decimal Classification 2020 Volume 2. 23rd. OCLC Inc, 2020.