Charles C Fries. (1961). Foundations for English teaching. Tokyo: Kenkyusha.
Trích dẫn kiểu ChicagoCharles C Fries. Foundations for English Teaching. Tokyo: Kenkyusha, 1961.
Deismireacht MLACharles C Fries. Foundations for English Teaching. Tokyo: Kenkyusha, 1961.
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