L. H. Gerstein, „Systematic Test of Equivalence Procedure: New Method to Investigate Cross-Cultural Validity”, rcis, vol. 62, pp. 278–293, sep. 2018, Data accesării: nov. 07, 2026. Disponibil la: https://www.rcis.ro/journal/article/view/2472-systematic-test-of-equivalence-procedure-new-method-to