Helene R. Fuller. (1961). Advanced English exercises: A practice book for advanced students. New York: McGraw-Hill.
استشهاد بنمط شيكاغوHelene R. Fuller. Advanced English Exercises: A Practice Book for Advanced Students. New York: McGraw-Hill, 1961.
MLA استشهادHelene R. Fuller. Advanced English Exercises: A Practice Book for Advanced Students. New York: McGraw-Hill, 1961.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.