Barker, R. N. A. a. V. C. Basic college mathematics an applied approach. Houghton Mifflin Company.
Chicago-referens (17:e uppl.)Barker, Richard N. Aufmann and Vernon C. Basic College Mathematics an Applied Approach. Houghton Mifflin Company.
MLA-referens (8:e uppl.)Barker, Richard N. Aufmann and Vernon C. Basic College Mathematics an Applied Approach. Houghton Mifflin Company.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.