Dewey, M. (1971). Dewey decimal classification and relative index (18th. ed.). Forest Press, a division of OCLC Online Computer Library Center.
Lua i Stíl Chicago (17ú heag.)Dewey, Melvil. Dewey Decimal Classification and Relative Index. 18th. ed. Albany, N.Y.: Forest Press, a division of OCLC Online Computer Library Center, 1971.
Lua MLA (9ú heag.)Dewey, Melvil. Dewey Decimal Classification and Relative Index. 18th. ed. Forest Press, a division of OCLC Online Computer Library Center, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.