Howard, M. C. (1983). Profits in economic theory. St. Martin's Press.
芝加哥风格引文Howard, Michael Charles. Profits in Economic Theory. New York: St. Martin's Press, 1983.
MLA引文Howard, Michael Charles. Profits in Economic Theory. St. Martin's Press, 1983.
警告：这些引文格式不一定是100％准确.