Cita APA (7th ed.)

(1999). Early Warning, Timely Response: A Guide to Safe Schools. U.S. Department of Education.

Cita Chicago (17th ed.)

Early Warning, Timely Response: A Guide to Safe Schools. U.S. Department of Education, 1999.

Cita MLA (9th ed.)

Early Warning, Timely Response: A Guide to Safe Schools. U.S. Department of Education, 1999.

Atenció: Aquestes cites poden no estar 100% correctes.