APA Edition Citation

Beall, J. E., Comaromi, J. P. E., Dewey, M., Matthews, W. E. E., & New, G. R. E. (1989). Dewey Decimal Classification and relative index (Ed.20.).

Chicago Edition Citation

Beall, Julianne; Ed, John P; Ed Comaromi, Melvil Dewey, Winton E; Ed Matthews, and Gregory R; Ed New. Dewey Decimal Classification and Relative Index. Ed.20. New York, Forest press, 1989.

MLA Edition Citation

Beall, Julianne; Ed, et al. Dewey Decimal Classification and Relative Index. Ed.20. 1989.