APA aipamena

Stubbs, P. C. (1980). Transports economics. London: George Allen & Unwin.

Chicago Style aipamena

Stubbs, P. C. Transports Economics. London: George Allen & Unwin, 1980.

MLA aipamena

Stubbs, P. C. Transports Economics. London: George Allen & Unwin, 1980.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.