Cita APA (7th ed.)

Fries, C. (1945). Teaching and learning english as a foreing languaje. University of Michigan.

Cita Chicago (17th ed.)

Fries, Charles. Teaching and Learning English as a Foreing Languaje. Ann Arbor: University of Michigan, 1945.

Cita MLA (9th ed.)

Fries, Charles. Teaching and Learning English as a Foreing Languaje. University of Michigan, 1945.