Hoffmann, L. D. (2004). Calculus : for business, economics: And the social and life sciences. McGraw-Hill.
Chicago-viite (17. p.)Hoffmann, Laurence D. Calculus : For Business, Economics: And the Social and Life Sciences. Boston: McGraw-Hill, 2004.
MLA-viite (9. p.)Hoffmann, Laurence D. Calculus : For Business, Economics: And the Social and Life Sciences. McGraw-Hill, 2004.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.