APA Citation

 Hacker, D. (2007).  A writer’s reference: With Extra help for ESL Writers.  Bedford/St. Martin’s.

Chicago Style Citation

 Hacker, Diana.  A Writer’s Reference: With Extra Help for ESL Writers.  Bedford/St. Martin’s, 2007.

MLA Citation

 Hacker, Diana.  A Writer’s Reference: With Extra Help for ESL Writers.  Bedford/St. Martin’s, 2007.

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