engert, m. (1964). structural problems of industry. the institute of national planning.
Chicago Style (17th ed.) Citationengert, m. Structural Problems of Industry. cairo: the institute of national planning, 1964.
MLA引文engert, m. Structural Problems of Industry. the institute of national planning, 1964.
警告：這些引文格式不一定是100％准確.