Bluman, A. G. (1995). Elementary statistics: A step by step approach (2nd.ed.). WCB.
Cita Chicago (17th ed.)Bluman, Allan G. Elementary Statistics: A Step by Step Approach. 2nd.ed. Dubuque: WCB, 1995.
Cita MLA (9th ed.)Bluman, Allan G. Elementary Statistics: A Step by Step Approach. 2nd.ed. WCB, 1995.
Atenció: Aquestes cites poden no estar 100% correctes.