Dyfyniad APA
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.
Dyfyniad Arddull Chicago
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.
Dyfyniad MLA
Dewey, Melvil, et al. Dewey Decimal Classification and Relative Index. Ed. 21. Forest Press, a division of OCLC Online Computer Library Center, 1996.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.