APA (7th ed.) Citation

Roberts, P. (1967). The Roberts English series: A linguistics program (Complete course.). Harcourt, Brace & World.

Chicago Style (17th ed.) Citation

Roberts, Paul. The Roberts English Series: A Linguistics Program. Complete course. New York: Harcourt, Brace & World, 1967.

MLA (9th ed.) Citation

Roberts, Paul. The Roberts English Series: A Linguistics Program. Complete course. Harcourt, Brace & World, 1967.