Bry, G. (1959). The average workweek as an economic indicator. National Bureau of Economic Research.
芝加哥风格引文Bry, Gerhard. The Average Workweek as an Economic Indicator. [New York]: National Bureau of Economic Research, 1959.
MLA引文Bry, Gerhard. The Average Workweek as an Economic Indicator. National Bureau of Economic Research, 1959.
警告：这些引文格式不一定是100％准确.