Goldstein, H. (2011). Multilevel statistical models (4th ed.). Wiley.
Cita Chicago (17th ed.)Goldstein, Harvey. Multilevel Statistical Models. 4th ed. Chichester: Wiley, 2011.
Cita MLA (9th ed.)Goldstein, Harvey. Multilevel Statistical Models. 4th ed. Wiley, 2011.
Atenció: Aquestes cites poden no estar 100% correctes.