APA引文

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

Chicago Style (17th ed.) Citation

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

MLA引文

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