APA (7th ed.) Citation

Roberts, P. (1967). The Roberts english series: A linguistics program. California State Dept. of. Education.

Chicago Style (17th ed.) Citation

Roberts, Paul. The Roberts English Series: A Linguistics Program. California State Dept. of. Education, 1967.

MLA (8th ed.) Citation

Roberts, Paul. The Roberts English Series: A Linguistics Program. California State Dept. of. Education, 1967.

Warning: These citations may not always be 100% accurate.