APA

National Assessment of Educational Progress Project, .Mathematics...,trial urban district assessment result at grades 4 and 8. Washington,D.C: U.S. Dept. of Education, Institute of Education Sciences, National Center for Education Statistics.

Chicago

National Assessment of Educational Progress Project, .Mathematics...,trial urban district assessment result at grades 4 and 8. Washington,D.C: U.S. Dept. of Education, Institute of Education Sciences, National Center for Education Statistics.

Harvard

National Assessment of Educational Progress Project, .Mathematics...,trial urban district assessment result at grades 4 and 8. Washington,D.C: U.S. Dept. of Education, Institute of Education Sciences, National Center for Education Statistics.

MLA

National Assessment of Educational Progress Project, .Washington,D.C: U.S. Dept. of Education, Institute of Education Sciences, National Center for Education Statistics. .