Dyfyniad APA

(2014). Build your basic writing skills [electronic resource].

Dyfyniad Arddull Chicago

Build Your Basic Writing Skills [electronic Resource]. 2014.

Dyfyniad MLA

Build Your Basic Writing Skills [electronic Resource]. 2014.

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