Chatfield, C. (1995). Problem solving a statistician's guide (2a. ed.). Chapman and Hall.
Cita Chicago (17th ed.)Chatfield, Chris. Problem Solving a Statistician's Guide. 2a. ed. Londres: Chapman and Hall, 1995.
Cita MLA (9th ed.)Chatfield, Chris. Problem Solving a Statistician's Guide. 2a. ed. Chapman and Hall, 1995.
Atenció: Aquestes cites poden no estar 100% correctes.