Schoenberg, I. E., & Maurer, J. (2002). Focus On Grammar: An Introductory Course for Reference and Practice. Addison Wesley Longman.
Chicago Style (17th ed.) CitationSchoenberg, Irene E., and Jay Maurer. Focus On Grammar: An Introductory Course for Reference and Practice. Addison Wesley Longman, 2002.
MLA (8th ed.) CitationSchoenberg, Irene E., and Jay Maurer. Focus On Grammar: An Introductory Course for Reference and Practice. Addison Wesley Longman, 2002.
Warning: These citations may not always be 100% accurate.