Schwartzman, D. (1970). Oligopoly in the farm machinery industry. Royal Commission on Farm Machinery.
芝加哥风格引文Schwartzman, David. Oligopoly in the Farm Machinery Industry. [Ottawa]: Royal Commission on Farm Machinery, 1970.
MLA引文Schwartzman, David. Oligopoly in the Farm Machinery Industry. Royal Commission on Farm Machinery, 1970.
警告：这些引文格式不一定是100％准确.