Finch, W. H. (2014). Multilevel modeling using R. CRC Pr.
Cita Chicago (17th ed.)Finch, W. Holmes. Multilevel Modeling Using R. London: CRC Pr, 2014.
Cita MLA (9th ed.)Finch, W. Holmes. Multilevel Modeling Using R. CRC Pr, 2014.
Atenció: Aquestes cites poden no estar 100% correctes.