APA引文

Helfgott, R. B. (1974). Labor economics ([1st ed.].). Random House.

芝加哥风格引文

Helfgott, Roy B. Labor Economics. [1st ed.]. New York: Random House, 1974.

MLA引文

Helfgott, Roy B. Labor Economics. [1st ed.]. Random House, 1974.

警告：这些引文格式不一定是100％准确.