Dewey, Melvil (1876), A Classification and Subject Index for Cataloguing and Arranging the Books and Pamphlets of a .., [s.n.], OCLC78870163, OL23422140M
Comaromi, John P. (1976), The eighteen editions of the Dewey Decimal Classification, Albany, N.Y: Forest Press Division, Lake Placid Education Foundation, m/s. 43, ISBN978-0-910608-17-6, OL4881898M
Dewey, Melvil (1876), A Classification and Subject Index for Cataloguing and Arranging the Books and Pamphlets of a .., [s.n.], OCLC78870163, OL23422140M