APA (7th ed.) Zitazioa
Williams, A. C. (1995). Risk management and insurance (7th ed.). McGraw-Hill.
Chicago Style (17th ed.) Zitazioa
Williams, Arthur C. Risk Management and Insurance. 7th ed. New York: McGraw-Hill, 1995.
MLA (9th ed.) Zitazioa
Williams, Arthur C. Risk Management and Insurance. 7th ed. McGraw-Hill, 1995.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.