Mehr, R. I., & Wales, H. G. (1950). Business life insurance and its economic applications. University of Illinois.
Lua i Stíl Chicago (17ú heag.)Mehr, Robert Irwin, agus Hugh G. Wales. Business Life Insurance and Its Economic Applications. Urbana: University of Illinois, 1950.
Lua MLA (8ú heag.)Mehr, Robert Irwin, agus Hugh G. Wales. Business Life Insurance and Its Economic Applications. University of Illinois, 1950.
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