Voorhis Walter R Van & Topp, C. (1955). Fundamentals of business mathematics (2nd ed.). Prentice-Hall.
Dyfyniad Arddull ChicagoVoorhis Walter R Van and C.W Topp. Fundamentals of Business Mathematics. 2nd ed. Englewood: Prentice-Hall, 1955.
Dyfyniad MLAVoorhis Walter R Van and C.W Topp. Fundamentals of Business Mathematics. 2nd ed. Prentice-Hall, 1955.
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