Dyfyniad APA

(1957). The writer's resource book. Chicago: Scott, Foresman.

Dyfyniad Arddull Chicago

The Writer's Resource Book. Chicago: Scott, Foresman, 1957.

Dyfyniad MLA

The Writer's Resource Book. Chicago: Scott, Foresman, 1957.

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