Dyfyniad APA

Dewey, M. (1971). Dewey decimal classification and relative index, Vol.2: Schedules (18 edition.). Forest Press.

Dyfyniad Arddull Chicago

Dewey, Melvil. Dewey Decimal Classification and Relative Index, Vol.2: Schedules. 18 edition. New York: Forest Press, 1971.

Dyfyniad MLA

Dewey, Melvil. Dewey Decimal Classification and Relative Index, Vol.2: Schedules. 18 edition. Forest Press, 1971.

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