Dyfyniad APA

Tagart. Higher Mental Processes. University of Illinois Press.

Dyfyniad Arddull Chicago

Tagart. Higher Mental Processes. University of Illinois Press.

Dyfyniad MLA

Tagart. Higher Mental Processes. University of Illinois Press.

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