APA:1. Safwan Al Salaimeh, BILJANA STOJAN ILIC. (Volume-9, Issue- -(Year-2022)). Management of telecommunication operator services in Serbia . Retrieved from https://wseas.com/journals/articles.php?id=5618
Chicago:1. Safwan Al Salaimeh, BILJANA STOJAN ILIC. " Management of telecommunication operator services in Serbia " Example, Volume-9-issue--Year-2022- 2224-2899. https://wseas.com/journals/articles.php?id=5618.
