APA

National Center for Education Statistics, .Data file, State Library Agencies Survey, fiscal year. Washington, D.C: U.S. Dept. of Education, Institute of Education Sciences.

Chicago

National Center for Education Statistics, .Data file, State Library Agencies Survey, fiscal year. Washington, D.C: U.S. Dept. of Education, Institute of Education Sciences.

Harvard

National Center for Education Statistics, .Data file, State Library Agencies Survey, fiscal year. Washington, D.C: U.S. Dept. of Education, Institute of Education Sciences.

MLA

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