O'Flaherty, C. A. (1974). Highways: Highways and Traffic (2nd ed.). Edward Arnold.
Chicago Style (17th ed.) ZitazioaO'Flaherty, C. A. Highways: Highways and Traffic. 2nd ed. London: Edward Arnold, 1974.
MLA (9th ed.) ZitazioaO'Flaherty, C. A. Highways: Highways and Traffic. 2nd ed. Edward Arnold, 1974.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.