Dyfyniad APA

Currie, J., & Thomas, D. (1998). School quality and the longer-term effects of Head Start. National Bureau of Economic Research.

Dyfyniad Arddull Chicago

Currie, Janet, and Duncan Thomas. School Quality and the Longer-term Effects of Head Start. Cambridge: National Bureau of Economic Research, 1998.

Dyfyniad MLA

Currie, Janet, and Duncan Thomas. School Quality and the Longer-term Effects of Head Start. National Bureau of Economic Research, 1998.

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