Spring, J. H. (2005). The American school, 1642-2004. Boston: McGraw-Hill.
Trích dẫn kiểu ChicagoSpring, Joel H. The American School, 1642-2004. Boston: McGraw-Hill, 2005.
Deismireacht MLASpring, Joel H. The American School, 1642-2004. Boston: McGraw-Hill, 2005.
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