Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.