Cita APA (7a ed.)

Dewey, M. (1971). Dewey decimal classification and relative index (18th. ed.). Forest Press, a division of OCLC Online Computer Library Center.

Cita Chicago Style (17a ed.)

Dewey, Melvil. Dewey Decimal Classification and Relative Index. 18th. ed. Albany, N.Y.: Forest Press, a division of OCLC Online Computer Library Center, 1971.

Cita MLA (9a ed.)

Dewey, Melvil. Dewey Decimal Classification and Relative Index. 18th. ed. Forest Press, a division of OCLC Online Computer Library Center, 1971.