Dewey, M., Mitchell, J. S., Beall, J., Green, R., Martin, G., & Panzer, M. (2011). Dewey decimal classification and relative index (Ed. 23.). OCLC Online Computer Library Center, Inc..

Dewey, Melvil, Joan S. Mitchell, Julianne Beall, Rebecca Green, Giles Martin, and Michael Panzer. Dewey Decimal Classification and Relative Index. Ed. 23. Dublin, Ohio: OCLC Online Computer Library Center, Inc., 2011.

Dewey, Melvil, et al. Dewey Decimal Classification and Relative Index. Ed. 23. OCLC Online Computer Library Center, Inc., 2011.