APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Gass, Susan M. Input, Interaction, and the Second Language Learner. New York ; London: Routledge, Taylor & Francis Group, 2018.

MLA (9th ed.) Citation

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