Scharle, A., & Szabó, A. (2000). Learner autonomy: A guide to developing learner responsibility. Cambridge University Press.

Scharle, Ágota, and Anita Szabó. Learner Autonomy: A Guide to Developing Learner Responsibility. Cambridge ; New York: Cambridge University Press, 2000.

Scharle, Ágota, and Anita Szabó. Learner Autonomy: A Guide to Developing Learner Responsibility. Cambridge University Press, 2000.