Helene R. Fuller. (1961). Advanced English exercises: A practice book for advanced students. New York: McGraw-Hill.
Παραπομπή Chicago StyleHelene R. Fuller. Advanced English Exercises: A Practice Book for Advanced Students. New York: McGraw-Hill, 1961.
Παραπομπή MLAHelene R. Fuller. Advanced English Exercises: A Practice Book for Advanced Students. New York: McGraw-Hill, 1961.
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