E. Rutherford,William. (2000). Techniques and principles in language teaching (second edition.). Oxford ; New York: Oxford University Press.

E. Rutherford,William. Techniques and Principles in Language Teaching. second edition. Oxford ; New York: Oxford University Press, 2000.

E. Rutherford,William. Techniques and Principles in Language Teaching. second edition. Oxford ; New York: Oxford University Press, 2000.