APA-viite (7. p.)

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

Chicago-viite (17. p.)

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

MLA-viite (9. p.)

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