Dyfyniad APA

(2000). Calculation of National Index of Public Effort to Fund Education. U.S. Department of Education.

Dyfyniad Arddull Chicago

Calculation of National Index of Public Effort to Fund Education. U.S. Department of Education, 2000.

Dyfyniad MLA

Calculation of National Index of Public Effort to Fund Education. U.S. Department of Education, 2000.

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