HARWOOD GORDON B. (1979). SELF REVIEW IN QUANTITATIVE METHODS (2ND.). RICHARD D.IRWIN INC.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHARWOOD GORDON B. SELF REVIEW IN QUANTITATIVE METHODS. 2ND. ILLIONS: RICHARD D.IRWIN INC, 1979.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHARWOOD GORDON B. SELF REVIEW IN QUANTITATIVE METHODS. 2ND. RICHARD D.IRWIN INC, 1979.
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