Spiegel, M. R. (1981). Statistics in si units: Schaum's outline of theory and problems of statistics in si units. Schaum Outline Series.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSpiegel, Murray R. Statistics in Si Units: Schaum's Outline of Theory and Problems of Statistics in Si Units. Schaum Outline Series, 1981.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSpiegel, Murray R. Statistics in Si Units: Schaum's Outline of Theory and Problems of Statistics in Si Units. Schaum Outline Series, 1981.
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