APA (7th ed.) Citation

Lenz, F., Frobenius, M., & Klattenberg, R. (2020). Classroom observation: Researching interaction in English language teaching. Peter Lang.

Chicago Style (17th ed.) Citation

Lenz, Friedrich, Maximiliane Frobenius, and Revert Klattenberg. Classroom Observation: Researching Interaction in English Language Teaching. New York: Peter Lang, 2020.

MLA (9th ed.) Citation

Lenz, Friedrich, et al. Classroom Observation: Researching Interaction in English Language Teaching. Peter Lang, 2020.