APA-referens

Buck, R., & Willcox, A. Calculus of several variables. Haughton Mifflin company.

Chicago-stil citat

Buck, R.C, och A.B Willcox. Calculus of Several Variables. Boston: Haughton Mifflin company.

MLA-referens

Buck, R.C, och A.B Willcox. Calculus of Several Variables. Haughton Mifflin company.