Roberts, P. The Robert's English series: A linguistic program (Teacher's edition.). Harcourt Brace and World.
Chicago Style (17th ed.) CitationRoberts, Paul. The Robert's English Series: A Linguistic Program. Teacher's edition. New York: Harcourt Brace and World.
MLA (9th ed.) CitationRoberts, Paul. The Robert's English Series: A Linguistic Program. Teacher's edition. Harcourt Brace and World.
Warning: These citations may not always be 100% accurate.