Dyfyniad APA

DEWEY, M. Dewey Decimal Classification and Relative Index#Melvil Dewey. Forest Press.

Dyfyniad Arddull Chicago

DEWEY, Melvil. Dewey Decimal Classification and Relative Index#Melvil Dewey. Forest Press.

Dyfyniad MLA

DEWEY, Melvil. Dewey Decimal Classification and Relative Index#Melvil Dewey. Forest Press.

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