(1999). Early Warning, Timely Response: A Guide to Safe Schools. U.S. Department of Education.
Citace podle Chicago (17th ed.)Early Warning, Timely Response: A Guide to Safe Schools. U.S. Department of Education, 1999.
Citace podle MLA (9th ed.)Early Warning, Timely Response: A Guide to Safe Schools. U.S. Department of Education, 1999.
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