Não informado. (1958). Proceedings of the Social Statistics Section. American Statistical Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Proceedings of the Social Statistics Section. Washington: American Statistical Association, 1958.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Proceedings of the Social Statistics Section. American Statistical Association, 1958.
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