APA aipamena

Organisation for Economic Co-operation and Development. (1971). Electronic aids for freeway operation. OECD.

Chicago Style aipamena

Organisation for Economic Co-operation and Development. Electronic Aids for Freeway Operation. [Paris: OECD, 1971.

MLA aipamena

Organisation for Economic Co-operation and Development. Electronic Aids for Freeway Operation. OECD, 1971.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.