APA (7th ed.) Citation

Schoenberg, I. E. (1994). Focus on grammar: Teacher's manual. A basic course for reference and practice (1a. ed.). Addison-Wesley.

Chicago Style (17th ed.) Citation

Schoenberg, Irene E. Focus on Grammar: Teacher's Manual. A Basic Course for Reference and Practice. 1a. ed. Reading: Addison-Wesley, 1994.

MLA (9th ed.) Citation

Schoenberg, Irene E. Focus on Grammar: Teacher's Manual. A Basic Course for Reference and Practice. 1a. ed. Addison-Wesley, 1994.