Bell, E., Bryman, A., Harley, B. (2022) Business research methods Bell, E., Bryman, A., & Harley, B. (2022). Business research methods. Oxford university press.
Saunders, M., Lewis, P., Thornhill, A. (2019) Research methods for business students Saunders M, Lewis P and Thornhill A. 2019. Research methods for business students. (6th ed.) London: Pearson.
Secundária
Laureano, R. (2022) Testes de hipóteses com o SPSS Stastistics Laureano, R. 2022. Testes de hipóteses com o SPSS Stastistics. Lisboa: Sílabo
Babbie, E. (2010) The practice of social research Babbie E. 2010. The practice of social research. 12th Edition. Belmont, USA: Wadsworth