Shenton, J. P., & Meckler, A. M. (1973). Programmed learning aid for United States history. Learning Systems.
Chicagoスタイル(17版)引用形式Shenton, James Patrick, , Alan M. Meckler. Programmed Learning Aid for United States History. Homewood, Ill: Learning Systems, 1973.
MLA(9版)引用形式Shenton, James Patrick, , Alan M. Meckler. Programmed Learning Aid for United States History. Learning Systems, 1973.
警告: この引用は必ずしも正確ではありません.