Campbell, T. J. (1901). The Only True American School System. New York.
Chicagoスタイル(17版)引用形式Campbell, Thomas J. The Only True American School System. New York, 1901.
MLA(8版)引用形式Campbell, Thomas J. The Only True American School System. New York, 1901.
警告: この引用は必ずしも正確ではありません.