Perna. Preparing Today's Students for Tomorrow's Jobs in Metropolitan America. University of Pennsylvania Press.
Cita Chicago (17th ed.)Perna. Preparing Today's Students for Tomorrow's Jobs in Metropolitan America. University of Pennsylvania Press.
Cita MLA (9th ed.)Perna. Preparing Today's Students for Tomorrow's Jobs in Metropolitan America. University of Pennsylvania Press.
Atenció: Aquestes cites poden no estar 100% correctes.