Urunbayeva Yulduz Pirnazarovna and Fayzullayeva Sabrina Uyg‘un qizi 2023. Theoretical-Methodological Problems of Service Sector Development. International Journal on Economics, Finance and Sustainable Development. 5, 12 (Dec. 2023), 34-40. DOI:https://doi.org/10.31149/ijefsd.v5i12.5020.