WILLIAMS, C., & HEINS, R. M. (1989). Risk management and insurance.-- ed.6. McGraw-Hill.
Chicago-čujuhus (17. p.)WILLIAMS, C.Arthur, juo Richard M. HEINS. Risk Management and Insurance.-- Ed.6. New York: McGraw-Hill, 1989.
MLA-čujuhus (9. p.)WILLIAMS, C.Arthur, juo Richard M. HEINS. Risk Management and Insurance.-- Ed.6. McGraw-Hill, 1989.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.