Citazione Stile APA (7a Edizione)

Richards, L. E. (1983). Business statistics: Why and when (2nd ed.). McGraw - Hill.

Citazione stile Chigago Style (17a edizione)

Richards, Larry E. Business Statistics: Why and When. 2nd ed. New York: McGraw - Hill, 1983.

Citatione MLA (9a ed.)

Richards, Larry E. Business Statistics: Why and When. 2nd ed. McGraw - Hill, 1983.