(2000). Preprimary Enrollment Rates. U.S. Department of Education.
Chicagoスタイル(17版)引用形式Preprimary Enrollment Rates. U.S. Department of Education, 2000.
MLA(9版)引用形式Preprimary Enrollment Rates. U.S. Department of Education, 2000.
警告: この引用は必ずしも正確ではありません.