APA

Folse K. S., University of Michigan, . (2001). Clear grammar : student workbook: more activities for spoken & written communication. Michigan: University of Michigan Press.

Chicago

Folse Keith S, University of Michigan, . 2001. Clear grammar : student workbook: more activities for spoken & written communication. Michigan: University of Michigan Press.

Harvard

Folse K. S., University of Michigan, . (2001). Clear grammar : student workbook: more activities for spoken & written communication. Michigan: University of Michigan Press.

MLA

Folse Keith S, University of Michigan, . Clear grammar : student workbook: more activities for spoken & written communication. Michigan: University of Michigan Press. 2001.