Woodyard, E. (1940). Culture at a price: A study of private correspondence school offerings. American Association for Adult Education.
Citace podle Chicago (17th ed.)Woodyard, Ella. Culture at a Price: A Study of Private Correspondence School Offerings. New York: American Association for Adult Education, 1940.
Citace podle MLA (8th ed.)Woodyard, Ella. Culture at a Price: A Study of Private Correspondence School Offerings. American Association for Adult Education, 1940.
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