1. The essential guide to effect sizes: statistical power, meta-analysis, and the interpretation of research results Ellis, Paul D., 1969- Cambridge ; Cambridge University Press, 2010. CP605
2. Research methods and data analysis for business decisions: a primer Using SPSS Sallis, James E., Cham, Switzerland : Springer Nature, [2021] GDM516
3. Statistical analysis of questionnaires: a unified approach based on R and Stata Bartolucci, Francesco, Boca Raton : CRC Press, [2016] CP605
