Dyfyniad APA

Roberts, P. (1970). The Roberts English series: A linguistics program. Harcourt, Brace & World.

Dyfyniad Arddull Chicago

Roberts, Paul. The Roberts English Series: A Linguistics Program. New York ; Chicago [etc.]: Harcourt, Brace & World, 1970.

Dyfyniad MLA

Roberts, Paul. The Roberts English Series: A Linguistics Program. Harcourt, Brace & World, 1970.

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