APA (7th ed.) Zitazioa
Friehe, T. (2008). Precaution incentives in accident settings. Gabler.
Chicago Style (17th ed.) Zitazioa
Friehe, Tim. Precaution Incentives in Accident Settings. Wiesbaden: Gabler, 2008.
MLA (9th ed.) Zitazioa
Friehe, Tim. Precaution Incentives in Accident Settings. Gabler, 2008.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.