Dyfyniad APA

Informal Logic | University of Windsor. Cambridge University Press.

Dyfyniad Arddull Chicago

Informal Logic | University of Windsor. Cambridge University Press.

Dyfyniad MLA

Informal Logic | University of Windsor. Cambridge University Press.

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