Watson, B. (1990). Testbank for statistics for management and economics (4th ed.). Allyn and Bacon/A Division of Simon & Schuster Inc.
Chicago Style aipamenaWatson, Billingsley. Testbank for Statistics for Management and Economics. 4th ed. Needham Heights, Massachussets: Allyn and Bacon/A Division of Simon & Schuster Inc, 1990.
MLA aipamenaWatson, Billingsley. Testbank for Statistics for Management and Economics. 4th ed. Allyn and Bacon/A Division of Simon & Schuster Inc, 1990.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.