Dyfyniad APA

William Zinsser. On Writing Well. Harpercollins Publisher.

Dyfyniad Arddull Chicago

William Zinsser. On Writing Well. Harpercollins Publisher.

Dyfyniad MLA

William Zinsser. On Writing Well. Harpercollins Publisher.

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