Cita APA (7a ed.)

Latham Koenig, C., Oxenden, C., & Lambert, J. (2019). English file A1: Beginner. Class audio CDs (4th edition.). Oxford University Press.

Cita Chicago Style (17a ed.)

Latham Koenig, Christina, Clive Oxenden, y Jerry Lambert. English File A1: Beginner. Class Audio CDs. 4th edition. Oxford: Oxford University Press, 2019.

Cita MLA (8a ed.)

Latham Koenig, Christina, et al. English File A1: Beginner. Class Audio CDs. 4th edition. Oxford University Press, 2019.