Sawyer, W. (1961). What is calculus about? Mathematical Association of America.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSawyer, W.W. What Is Calculus About? Washington: Mathematical Association of America, 1961.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSawyer, W.W. What Is Calculus About? Mathematical Association of America, 1961.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.