Dyfyniad APA
Bartik, T. J. (2014). From Preschool to Prosperity: The Economic Payoff to Early Childhood Education. W.E. Upjohn Institute for Employment Research.
Dyfyniad Arddull Chicago
Bartik, Timothy J. From Preschool to Prosperity: The Economic Payoff to Early Childhood Education. Kalamazoo, Michigan: W.E. Upjohn Institute for Employment Research, 2014.
Dyfyniad MLA
Bartik, Timothy J. From Preschool to Prosperity: The Economic Payoff to Early Childhood Education. W.E. Upjohn Institute for Employment Research, 2014.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.