Cita APA (7th ed.)
Ingram, J. A. (1989). Statistics for business and economics. HBJ.
Cita Chicago (17th ed.)
Ingram, John A. Statistics for Business and Economics. New York: HBJ, 1989.
Cita MLA (9th ed.)
Ingram, John A. Statistics for Business and Economics. HBJ, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.