APA Citation

Koch. (2000). Focus On Grammar: Workbook (2nd-ed.). New York: Longman.

Chicago Style Citation

Koch. Focus On Grammar: Workbook. 2nd-ed. New York: Longman, 2000.

MLA Citation

Koch. Focus On Grammar: Workbook. 2nd-ed. New York: Longman, 2000.

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