Williams, C. A., & Heins, R. M. (1981). Risk management and insurance (4th ed.). McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Williams, C. Arthur, agus Richard M. Heins. Risk Management and Insurance. 4th ed. New York: McGraw-Hill, 1981.
Lua MLA (9ú heag.)Williams, C. Arthur, agus Richard M. Heins. Risk Management and Insurance. 4th ed. McGraw-Hill, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.