1. Apsym Lab, ApsymSurvey (online survey software). Verona University, Italy (2013)
2. Arbuckle, J.L.: Amos (Version 7.0) (computer program). SPSS, Chicago (2006)
3. Byrne, B.M.: Structural equation modeling with Amos: Basic concepts, applications, and programming, 2nd edn. Taylor and Francis Group, New York (2010)
4. Elliot, A.J., Murayama, K.: On the measurement of achievement goals: Critique, illustration, and application. Journal of Educational Psychology 100, 613–628 (2008)
5. Elliot, A.J., Murayama, K., Pekrun, R.: A 3 X 2 achievement goal model. Journal of Educational Psychology 103, 632–648 (2011)