Gaya APA

Voorhis, W, R, V. (1961). Fundamentals of business mathematics (2nd ed.). Englewood Cliffs, NJ: Prentice-Hall, Inc..

Gaya MLA

Voorhis, Walter, R., Van. "Fundamentals of business mathematics". 2nd ed. Englewood Cliffs, NJ: Prentice-Hall, Inc., 1961. Text.