Gold, K. M. (2002). School's in: The history of summer education in American public schools. P. Lang.
Lua i Stíl Chicago (17ú heag.)Gold, Kenneth M. School's in: The History of Summer Education in American Public Schools. New York: P. Lang, 2002.
Lua MLA (9ú heag.)Gold, Kenneth M. School's in: The History of Summer Education in American Public Schools. P. Lang, 2002.
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