United Sates. Department of Education. (2007). Practical information on crisis planning: A guide for schools and communities ([Rev.].). Office of Safe and Drug-Free Schools, U.S. Department of Education.
Chicago-viite (17. p.)United Sates. Department of Education. Practical Information on Crisis Planning: A Guide for Schools and Communities. [Rev.]. Washington, D.C: Office of Safe and Drug-Free Schools, U.S. Department of Education, 2007.
MLA-viite (9. p.)United Sates. Department of Education. Practical Information on Crisis Planning: A Guide for Schools and Communities. [Rev.]. Office of Safe and Drug-Free Schools, U.S. Department of Education, 2007.
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