Dyfyniad APA

(2011). Dropping out: Why students drop out of high school and what can be done about it / Russell W. Rumberger.

Dyfyniad Arddull Chicago

Dropping Out: Why Students Drop Out of High School and What Can Be Done About It / Russell W. Rumberger. 2011.

Dyfyniad MLA

Dropping Out: Why Students Drop Out of High School and What Can Be Done About It / Russell W. Rumberger. 2011.

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