Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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