Cieciuch, JAN, and ELDAD DAVIDOV. 2015. “ESTABLISHING MEASUREMENT INVARIANCE ACROSS ONLINE AND OFFLINE SAMPLES. A TUTORIAL WITH THE SOFTWARE PACKAGES AMOS AND MPLUS”. Studia Psychologica: Theoria Et Praxis 15 (2):83-99. https://doi.org/10.21697/sp.2015.14.2.06.