Gaya APA

Hoffmann, L, D. (1989). Calculus: for business, economics, and the social and life sciences (4th ed.). New York: McGraw-Hill Publishing Company.

Gaya MLA

Hoffmann, Laurence, D.. "Calculus: for business, economics, and the social and life sciences". 4th ed. New York: McGraw-Hill Publishing Company, 1989. Text.