APA Style

Nunan, David. (1989). Understanding Language Classrooms . New York: Prentice Hall.

Chicago Style

Nunan, David. Understanding Language Classrooms. New York: Prentice Hall, 1989. Text.

MLA Style

Nunan, David. Understanding Language Classrooms. New York: Prentice Hall, 1989. Text.

Turabian Style

Nunan, David. Understanding Language Classrooms. New York: Prentice Hall, 1989. Print.