WILLIAMS, C. A. (1989). Risk Management And Insurance C. Arthur Williams And Richard M. Heins. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)WILLIAMS, C. Arthur. Risk Management And Insurance C. Arthur Williams And Richard M. Heins. McGraw-Hill, 1989.
Lua MLA (8ú heag.)WILLIAMS, C. Arthur. Risk Management And Insurance C. Arthur Williams And Richard M. Heins. McGraw-Hill, 1989.
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