W.O. ,. (1999). The Mathematics of life insurance. Ulrichs books.
Chicago-čujuhus (17. p.)W.O.. The Mathematics of Life Insurance. Ulrichs books, 1999.
MLA-čujuhus (9. p.)W.O.. The Mathematics of Life Insurance. Ulrichs books, 1999.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.