Dyfyniad APA

Dewey Melvil. (1971). Decimal Classification and Relative Index vol. ii schedules (18th.). Forest press Inc.

Dyfyniad Arddull Chicago

Dewey Melvil. Decimal Classification and Relative Index Vol. Ii Schedules. 18th. New York: Forest press Inc, 1971.

Dyfyniad MLA

Dewey Melvil. Decimal Classification and Relative Index Vol. Ii Schedules. 18th. Forest press Inc, 1971.

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