Urunbayeva Yulduz Pirnazarovna, and Fayzullayeva Sabrina Uyg‘un qizi. “Theoretical-Methodological Problems of Service Sector Development”. International Journal on Economics, Finance and Sustainable Development, Vol. 5, no. 12, Dec. 2023, pp. 34-40, https://journals.researchparks.org/index.php/IJEFSD/article/view/5020.