APA (7th ed.) Citation

Dewey, M., Mitchell, J. S., Beall, J., Matthews, W. E., & New, G. R. (1996). Dewey decimal classification and relative index (Ed. 21.). Forest Press, a division of OCLC Online Computer Library Center.

Chicago Style (17th ed.) Citation

Dewey, Melvil, Joan S. Mitchell, Julianne Beall, Winton E. Matthews, and Gregory R. New. Dewey Decimal Classification and Relative Index. Ed. 21. Albany, N.Y.: Forest Press, a division of OCLC Online Computer Library Center, 1996.

MLA (8th ed.) Citation

Dewey, Melvil, et al. Dewey Decimal Classification and Relative Index. Ed. 21. Forest Press, a division of OCLC Online Computer Library Center, 1996.