VARTIAK, LUKAS, et al. “COMPARING MARKETING TRENDS BEFORE AND AFTER THE PANDEMIC”. TPM – Testing, Psychometrics, Methodology in Applied Psychology, vol. 32, no. S5(2025): Posted 03 August, Aug. 2025, pp. 1283-90, https://tpmap.org/submission/index.php/tpm/article/view/1575.