APA (7th ed.) Zitazioa

Wren, A. (1971). Computers in transport planning and operation. Ian Allan.

Chicago Style (17th ed.) Zitazioa

Wren, Anthony. Computers in Transport Planning and Operation. Londres: Ian Allan, 1971.

MLA (9th ed.) Zitazioa

Wren, Anthony. Computers in Transport Planning and Operation. Ian Allan, 1971.