Enns, P. G. (1985). Bussines statistics: Methods and aplications. Richard D. Irwin.
Cita Chicago (17th ed.)Enns, Philip G. Bussines Statistics: Methods and Aplications. Richard D. Irwin, 1985.
Cita MLA (9th ed.)Enns, Philip G. Bussines Statistics: Methods and Aplications. Richard D. Irwin, 1985.
Atenció: Aquestes cites poden no estar 100% correctes.