Bitterman, A., Gray, L., & Goldring, R. (2013). Characteristics of Public Elementary and Secondary School Library Media Centers in the United States: Results from the 2011-12 Schools and Staffing Survey. First Look. NCES 2013-315.
Cita Chicago Style (17a ed.)Bitterman, Amy, Lucinda Gray, y Rebecca Goldring. Characteristics of Public Elementary and Secondary School Library Media Centers in the United States: Results from the 2011-12 Schools and Staffing Survey. First Look. NCES 2013-315. 2013.
Cita MLA (9a ed.)Bitterman, Amy, et al. Characteristics of Public Elementary and Secondary School Library Media Centers in the United States: Results from the 2011-12 Schools and Staffing Survey. First Look. NCES 2013-315. 2013.
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