Stephens, R. I. (1994). Case studies for fatigue education. ASTM.
芝加哥风格引文Stephens, Ralph Ivan. Case Studies for Fatigue Education. Philadelphia, Pa: ASTM, 1994.
MLA引文Stephens, Ralph Ivan. Case Studies for Fatigue Education. ASTM, 1994.
警告：这些引文格式不一定是100％准确.