Purcell, E. J. (1972). Calculus, with analytic geometry (2d ed.). Appleton-Century-Crofts.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPurcell, Edwin J. Calculus, with Analytic Geometry. 2d ed. New York: Appleton-Century-Crofts, 1972.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPurcell, Edwin J. Calculus, with Analytic Geometry. 2d ed. Appleton-Century-Crofts, 1972.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.