STADNYK, Valentyna, et al. “SCIENTIFIC-METHODICAL APPROACHES OF VALUE THEORY FOR MARKETING POSITIONING OF MEDICAL SERVICES”. Herald of Khmelnytskyi National University. Economic Sciences, vol. 320, no. 4, June 2023, pp. 489-94, https://doi.org/10.31891/2307-5740-2023-320-4-73.