Watkins, G. S. 1. . e. (1951). Labor in the American economy. The American Academy of Political and Social Science.
芝加哥风格引文Watkins, Gordon S 1889- ed. Labor in the American Economy. Philadelphia: The American Academy of Political and Social Science, 1951.
MLA引文Watkins, Gordon S 1889- ed. Labor in the American Economy. The American Academy of Political and Social Science, 1951.
警告：这些引文格式不一定是100％准确.