Lightbown, P. M., & Spada, N. M. (2013). How languages are learned (Fourth edition.). Oxford University Press.
Chicago Style (17. basım) AtıfLightbown, Patsy M., ve Nina Margaret Spada. How Languages Are Learned. Fourth edition. Oxford: Oxford University Press, 2013.
MLA (9th ed.) AtıfLightbown, Patsy M., ve Nina Margaret Spada. How Languages Are Learned. Fourth edition. Oxford University Press, 2013.
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