Kenney, Roger
The Kenney Insurance Studies, 1967
Buku Teks
Snider, H. Wayne
Ill. Irwin , 1959
Buku Teks
Casualty Actuarial Society, 1960
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Brown, Robert L., author
ACTEX Publications, Inc, 2015
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Rodda, William H.
Prentice-Hall, 1958
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