National Index of Public Effort to Fund Higher Education, 1930-96. US Department of Education.
Cita Chicago (17th ed.)National Index of Public Effort to Fund Higher Education, 1930-96. US Department of Education.
Cita MLA (8th ed.)National Index of Public Effort to Fund Higher Education, 1930-96. US Department of Education.
Atenció: Aquestes cites poden no estar 100% correctes.