Não informado. (1850). Journal of the Institute of Actuaries. Institute of Actuaries.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Journal of the Institute of Actuaries. London: Institute of Actuaries, 1850.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Journal of the Institute of Actuaries. Institute of Actuaries, 1850.
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