Gubbins, E. J. (1996). Managing transport operations (2a. ed.). Kogan Page.
Chicago Style (17th ed.) ZitazioaGubbins, Edmund J. Managing Transport Operations. 2a. ed. Londres: Kogan Page, 1996.
MLA (9th ed.) ZitazioaGubbins, Edmund J. Managing Transport Operations. 2a. ed. Kogan Page, 1996.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.