Labaree, D. F. (2010). Someone has to fail: The zero-sum game of public schooling. Harvard University Press.
Dyfyniad Arddull ChicagoLabaree, David F. Someone Has to Fail: The Zero-sum Game of Public Schooling. Cambridge, Mass.: Harvard University Press, 2010.
Dyfyniad MLALabaree, David F. Someone Has to Fail: The Zero-sum Game of Public Schooling. Harvard University Press, 2010.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.