APA (7th ed.) Citation

National Assessment of Educational Progress (Project) & National Institute of Education (U.S.). (1979). Mathematical understanding: Selected results from the second assessment of mathematics. [Dept. of Health, Education, and Welfare, Education Division], National Institute of Education.

Chicago Style (17th ed.) Citation

National Assessment of Educational Progress (Project) and National Institute of Education (U.S.). Mathematical Understanding: Selected Results from the Second Assessment of Mathematics. [Washington]: [Dept. of Health, Education, and Welfare, Education Division], National Institute of Education, 1979.

MLA (9th ed.) Citation

National Assessment of Educational Progress (Project) and National Institute of Education (U.S.). Mathematical Understanding: Selected Results from the Second Assessment of Mathematics. [Dept. of Health, Education, and Welfare, Education Division], National Institute of Education, 1979.