Stone, C. R. (1948). New practice readers; T4: Book D. New York: McGraw-Hill.
Trích dẫn kiểu ChicagoStone, Clarence R. New Practice Readers; T4: Book D. New York: McGraw-Hill, 1948.
Deismireacht MLAStone, Clarence R. New Practice Readers; T4: Book D. New York: McGraw-Hill, 1948.
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