Sergiovanni, T. J. (1993). Supervision: A redefinition (5th.ed.). McGraw-Hill.
Chicago Style (17th ed.) ZitazioaSergiovanni, Thomas J. Supervision: A Redefinition. 5th.ed. New York: McGraw-Hill, 1993.
MLA (9th ed.) ZitazioaSergiovanni, Thomas J. Supervision: A Redefinition. 5th.ed. McGraw-Hill, 1993.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.