Cita APA

Dewey, M. (1989). Dewey decimal classification and relative index (20th ed.). Forest Press.

Citación estilo Chicago

Dewey, Melvil. Dewey Decimal Classification and Relative Index. 20th ed. Albany, New York: Forest Press, 1989.

Cita MLA

Dewey, Melvil. Dewey Decimal Classification and Relative Index. 20th ed. Forest Press, 1989.