APA (7th ed.) Citation

Lightbown P. M. Patsy & Spada N. Nina. (2006). How Languages are Learned (Third edition.). New York, Oxford University Press, 2006.

Chicago Style (17th ed.) Citation

Lightbown P. M. Patsy and Spada N. Nina. How Languages Are Learned. Third edition. New York, Oxford University Press, 2006, 2006.

MLA (9th ed.) Citation

Lightbown P. M. Patsy and Spada N. Nina. How Languages Are Learned. Third edition. New York, Oxford University Press, 2006, 2006.