singer, h. w. (1962). choic of technology. the institute of national planning.
Chicagoスタイル(17版)引用形式singer, h. w. Choic of Technology. cairo: the institute of national planning, 1962.
MLA(9版)引用形式singer, h. w. Choic of Technology. the institute of national planning, 1962.
警告: この引用は必ずしも正確ではありません.