Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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