HEILBRONER, R. L., & THUROW, L. C. (1981). The economic problem.-- Ed.6. Prentice-Hall.
芝加哥风格引文HEILBRONER, Robert L., 与 Lester C. THUROW. The Economic Problem.-- Ed.6. New Jersey: Prentice-Hall, 1981.
MLA引文HEILBRONER, Robert L., 与 Lester C. THUROW. The Economic Problem.-- Ed.6. Prentice-Hall, 1981.
警告：这些引文格式不一定是100％准确.