Spiegel, M. R. (1956). Theory and problems of college algebra. Mc Graw - Hill.
शिकागो स्टाइल उद्धरणSpiegel, Murray R. Theory and Problems of College Algebra. New york: Mc Graw - Hill, 1956.
एमएलए उद्धरणSpiegel, Murray R. Theory and Problems of College Algebra. Mc Graw - Hill, 1956.
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