Rugg, H. O. (1931). Culture and education in America. Harcourt, Brace and Co.
Lua i Stíl Chicago (17ú heag.)Rugg, Harold Ordway. Culture and Education in America. New York: Harcourt, Brace and Co, 1931.
Lua MLA (8ú heag.)Rugg, Harold Ordway. Culture and Education in America. Harcourt, Brace and Co, 1931.
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