(2000). International Comparisons of Educational Attainment, by Age. U.S. Department of Education.
芝加哥风格引文International Comparisons of Educational Attainment, by Age. U.S. Department of Education, 2000.
MLA引文International Comparisons of Educational Attainment, by Age. U.S. Department of Education, 2000.
警告：这些引文格式不一定是100％准确.