APA aipamena

National Research Council (U.S.). Transportation Research Board. (1992). Railroad issues. Transportation Research Board, National Research Council.

Chicago Style aipamena

National Research Council (U.S.). Transportation Research Board. Railroad Issues. Washington, D.C: Transportation Research Board, National Research Council, 1992.

MLA aipamena

National Research Council (U.S.). Transportation Research Board. Railroad Issues. Transportation Research Board, National Research Council, 1992.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.