freeman, C. (1982). The economics of industrial innovation (2th. ed.). Christopher freeman.
Chicagoスタイル(17版)引用形式freeman, Christopher. The Economics of Industrial Innovation. 2th. ed. london: Christopher freeman, 1982.
MLA(9版)引用形式freeman, Christopher. The Economics of Industrial Innovation. 2th. ed. Christopher freeman, 1982.
警告: この引用は必ずしも正確ではありません.