Gaya APA

E., C, P, ;, B, ;, M, W., Dewey, M. (1989). Dewey Decimal Classification and Relative Index (Ed. 20.). New York: Forest Press.

Gaya MLA

E., Comaromi,John, P., ;, Beall,Julianne, ;, Matthews,, Winton., Dewey, Melvil. "Dewey Decimal Classification and Relative Index". Ed. 20. New York: Forest Press, 1989. Buku.