Gass, S. M., Behney, J., & Plonsky, L. (2013). Second language acquisition: An introductory course (Fourth edition.). Routledge.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGass, Susan M., Jennifer Behney, और Luke Plonsky. Second Language Acquisition: An Introductory Course. Fourth edition. New York: Routledge, 2013.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGass, Susan M., et al. Second Language Acquisition: An Introductory Course. Fourth edition. Routledge, 2013.
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