Bittel, L. R. (1974). What every supervisor should know/3e (3rd ed.). Tata McGraw Hill.
Chicago Style aipamenaBittel, Lester R. What Every Supervisor Should Know/3e. 3rd ed. New Delhi: Tata McGraw Hill, 1974.
MLA aipamenaBittel, Lester R. What Every Supervisor Should Know/3e. 3rd ed. Tata McGraw Hill, 1974.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.