APA

Latham-Koenig C., Oxenden C. & Chomacki K. (2021). American english file 4. New York: Oxford University Press.

Chicago

Latham-Koenig Christina, Oxenden Clive and Chomacki Kate. 2021. American english file 4. New York: Oxford University Press.

Harvard

Latham-Koenig C., Oxenden C. and Chomacki K. (2021). American english file 4. New York: Oxford University Press.

MLA

Latham-Koenig Christina, Oxenden Clive and Chomacki Kate. American english file 4. New York: Oxford University Press. 2021.