Cita APA (7a ed.)

Wright, T. (1991). Roles of teachers & learners ([1st ed., 3rd imp.].). Oxford University Press.

Cita Chicago Style (17a ed.)

Wright, T. Roles of Teachers & Learners. [1st ed., 3rd imp.]. London: Oxford University Press, 1991.

Cita MLA (9a ed.)

Wright, T. Roles of Teachers & Learners. [1st ed., 3rd imp.]. Oxford University Press, 1991.