National School Boards Association. (1984). Toward better and safer schools: A school leader's guide to delinquency prevention.
Cita Chicago Style (17a ed.)National School Boards Association. Toward Better and Safer Schools: A School Leader's Guide to Delinquency Prevention. Washington, D.C, 1984.
Cita MLA (8a ed.)National School Boards Association. Toward Better and Safer Schools: A School Leader's Guide to Delinquency Prevention. 1984.
Precaución: Estas citas no son 100% exactas.