Cita APA (7th ed.)
ebrary, Inc, & Clotfelter, C. T. (1991). Economic challenges in higher education. University of Chicago Press.
Cita Chicago (17th ed.)
ebrary, Inc, i Charles T. Clotfelter. Economic Challenges in Higher Education. Chicago: University of Chicago Press, 1991.
Cita MLA (9th ed.)
ebrary, Inc, i Charles T. Clotfelter. Economic Challenges in Higher Education. University of Chicago Press, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.