Dyfyniad APA
Cohen, D. K., & Hill, H. C. (2001). Learning policy: When state education reform works. Yale University Press.
Dyfyniad Arddull Chicago
Cohen, David K., and Heather C. Hill. Learning Policy: When State Education Reform Works. New Haven: Yale University Press, 2001.
Dyfyniad MLA
Cohen, David K., and Heather C. Hill. Learning Policy: When State Education Reform Works. Yale University Press, 2001.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.