Steffensen, A. R. (1992). College algebra: A problem-solving approach (2nd.ed.). Harper Collins.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSteffensen, Arnold R. College Algebra: A Problem-solving Approach. 2nd.ed. New York: Harper Collins, 1992.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSteffensen, Arnold R. College Algebra: A Problem-solving Approach. 2nd.ed. Harper Collins, 1992.
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