Παραπομπή APA

Dewey, M. (2011). Dewey decimal classification and relative index- Vol.4 (23rd ed.). OCLC.

Παραπομπή Chicago Style

Dewey, Melvil. Dewey Decimal Classification and Relative Index- Vol.4. 23rd ed. Dublin: OCLC, 2011.

Παραπομπή MLA

Dewey, Melvil. Dewey Decimal Classification and Relative Index- Vol.4. 23rd ed. OCLC, 2011.