(1978). Motion and time study: Improving productivity / Marvin E. Mundel.
芝加哥风格引文Motion and Time Study: Improving Productivity / Marvin E. Mundel. 1978.
MLA引文Motion and Time Study: Improving Productivity / Marvin E. Mundel. 1978.
警告：这些引文格式不一定是100％准确.