APA Citation

Schoenberg, I. E. d. J. M. Focus on Grammar: An Introductory Course for Reference and practice. Addison Wesley Longman Inc.

Chicago Style Citation

Schoenberg, Irene E dan Jay Maurer. Focus On Grammar: An Introductory Course for Reference and Practice. Addison Wesley Longman Inc.

MLA Citation

Schoenberg, Irene E dan Jay Maurer. Focus On Grammar: An Introductory Course for Reference and Practice. Addison Wesley Longman Inc.

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