APA (7th ed.) Citation

Walker, M. (1989). ESL: Activity book (1a. ed.). Addison-Wesley.

Chicago Style (17th ed.) Citation

Walker, Michael. ESL: Activity Book. 1a. ed. Reading: Addison-Wesley, 1989.

MLA (9th ed.) Citation

Walker, Michael. ESL: Activity Book. 1a. ed. Addison-Wesley, 1989.