Gass, S. M. (2018). Input, interaction, and the second language learner (First edition.). Routledge, Taylor & Francis Group.

Gass, Susan M. Input, Interaction, and the Second Language Learner. First edition. New York, NY ; Milton Park, Abingdon, Oxon: Routledge, Taylor & Francis Group, 2018.

Gass, Susan M. Input, Interaction, and the Second Language Learner. First edition. Routledge, Taylor & Francis Group, 2018.