Kotlovskiy, Andiy, Nataliya Mykytenko, Andriana Onufriv, and Maryana Salamakha. 2020. “LANGUAGE PORTFOLIO FOR BUILDING LINGUISTIC COMPETENCE IN ESP SPEAKING IN STUDENTS’ INDEPENDENT WORK”. Advanced Education 7 (15):20-24. https://doi.org/10.20535/2410-8286.200750.