Dyfyniad APA

Dewey, M., & Mitchell, J. S. (1997). Abridged Dewey decimal classification and relative index (Ed. 13.). Forest Press.

Dyfyniad Arddull Chicago

Dewey, Melvil, and Joan S. Mitchell. Abridged Dewey Decimal Classification and Relative Index. Ed. 13. Albany: Forest Press, 1997.

Dyfyniad MLA

Dewey, Melvil, and Joan S. Mitchell. Abridged Dewey Decimal Classification and Relative Index. Ed. 13. Forest Press, 1997.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.