Goffman, C. (1965). Calculus of several variables. Harper and Row.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGoffman, Casper. Calculus of Several Variables. New York: Harper and Row, 1965.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGoffman, Casper. Calculus of Several Variables. Harper and Row, 1965.
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