Willoughby, S. S. (1990). Mathematics education for a changing world. ASCD.
芝加哥风格引文Willoughby, Stephen S. Mathematics Education for a Changing World. Alexandria: ASCD, 1990.
MLA引文Willoughby, Stephen S. Mathematics Education for a Changing World. ASCD, 1990.
警告：这些引文格式不一定是100％准确.