Dewey, M., Comaromi, J. P., Beall, J., Matthews, W. E., & New, G. R. (1990). Abridged Dewey decimal classification and relative index (Ed. 12.). Forest Press.

Dewey, Melvil, John P. Comaromi, Julianne Beall, Winton E. Matthews, and Gregory R. New. Abridged Dewey Decimal Classification and Relative Index. Ed. 12. Albany, N.Y: Forest Press, 1990.

Dewey, Melvil, et al. Abridged Dewey Decimal Classification and Relative Index. Ed. 12. Forest Press, 1990.