Dyfyniad APA

Dewey,Melvil. (2011). Dewey decimal classification: III (23 rd.). Online Computer Library Centre.

Dyfyniad Arddull Chicago

Dewey,Melvil. Dewey Decimal Classification: III. 23 rd. Ohio: Online Computer Library Centre, 2011.

Dyfyniad MLA

Dewey,Melvil. Dewey Decimal Classification: III. 23 rd. Online Computer Library Centre, 2011.

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