National Center for Education Statistics. & Institute of Education Sciences (U.S.). (2007). Economics 2006: National assessment of educational progress at grade 12. National Center for Education Statistics, Institute of Education Sciences, U.S. Dept. of Education.
Chicago Style (17th ed.) CitationNational Center for Education Statistics., and Institute of Education Sciences (U.S.). Economics 2006: National Assessment of Educational Progress At Grade 12. Washington, D.C.: National Center for Education Statistics, Institute of Education Sciences, U.S. Dept. of Education, 2007.
MLA (8th ed.) CitationNational Center for Education Statistics., and Institute of Education Sciences (U.S.). Economics 2006: National Assessment of Educational Progress At Grade 12. National Center for Education Statistics, Institute of Education Sciences, U.S. Dept. of Education, 2007.