Fries, C. (1945). Teaching and learning english as a foreing languaje. University of Michigan.
Chicago-čujuhus (17. p.)Fries, Charles. Teaching and Learning English as a Foreing Languaje. Ann Arbor: University of Michigan, 1945.
MLA-čujuhus (9. p.)Fries, Charles. Teaching and Learning English as a Foreing Languaje. University of Michigan, 1945.
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