Citazione Stile APA (7a Edizione)

Williams, C. A., & .Heins, R. M. (1981). Risk management and insurance (4th ed.). McGraw-Hill.

Citazione stile Chigago Style (17a edizione)

Williams, C. Arthur, e Richard M. .Heins. Risk Management and Insurance. 4th ed. New York: McGraw-Hill, 1981.

Citatione MLA (9a ed.)

Williams, C. Arthur, e Richard M. .Heins. Risk Management and Insurance. 4th ed. McGraw-Hill, 1981.