Perkins, J. A. (1966). The University in transition. Princeton U. pr..
Chicago Style (17th ed.) ZitazioaPerkins, James A. The University in Transition. N.J.: Princeton U. pr., 1966.
MLA (9th ed.) ZitazioaPerkins, James A. The University in Transition. Princeton U. pr., 1966.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.