Cita APA

Dewey, M. (1996). Dewey decimal classification (21st.). Forest Press.

Chicago Edition Citation

Dewey, Melvil. Dewey Decimal Classification. 21st. Newyork: Forest Press, 1996.

Cita MLA

Dewey, Melvil. Dewey Decimal Classification. 21st. Forest Press, 1996.