Perie, M., Baker, D., Bobbitt, S. A., & National Center for Education Statistics. (1997). Time spent teaching core academic subjects in elementary schools: Comparisons across community, school, teacher, and student characteristics. U.S. Dept. of Education, Office of Educational Research and Improvement : For sale by the U.S. G.P.O., Supt. of Docs..
Chicago Style (17th ed.) CitationPerie, Marianne., David Baker, Sharon A. Bobbitt, and National Center for Education Statistics. Time Spent Teaching Core Academic Subjects in Elementary Schools: Comparisons Across Community, School, Teacher, and Student Characteristics. Washington, DC: U.S. Dept. of Education, Office of Educational Research and Improvement : For sale by the U.S. G.P.O., Supt. of Docs., 1997.
MLA (8th ed.) CitationPerie, Marianne., et al. Time Spent Teaching Core Academic Subjects in Elementary Schools: Comparisons Across Community, School, Teacher, and Student Characteristics. U.S. Dept. of Education, Office of Educational Research and Improvement : For sale by the U.S. G.P.O., Supt. of Docs., 1997.