Dewey, M. (2011). Dewey Decimal Classification (23rd.). OCLC.
Cita Chicago (17th ed.)Dewey, Melvil. Dewey Decimal Classification. 23rd. OCLC, 2011.
Cita MLA (9th ed.)Dewey, Melvil. Dewey Decimal Classification. 23rd. OCLC, 2011.
Atenció: Aquestes cites poden no estar 100% correctes.