5Higher Education in American Society, Revised Edition, Edited by P.G. Altbach and R.O. Berdahl,1987.120.
6Digest of Education Statistics 1977-78, by W.Vance Grant Specialist in Education Statistics and C.George Lind Statistician National Center for Education Statistics, U.S.Government Printing Office Washinton: 1978.126.
7John O' Brien, Wayne Pulver, Anita Zinnecker Financing higher education in Texas[ M] Legislative Buget Board 2007, ( 1 ).
