KAVALIAUSKAS, M. STATISTICAL VALIDATION OF AN ENGLISH FOR SPECIFIC PURPOSES ACHIEVEMENT TEST USING CLASSICAL TEST THEORY: A CASE STUDY OF A HIGHER EDUCATION INSTITUTION. PROFESSIONAL STUDIES: Theory And Practice, [S. l.], v. 30, n. 1, p. 4–12, 2026. DOI: 10.56131/pstp.2026.30.1.436. Disponível em: https://ojs.svako.lt/PSTP/article/view/436. Acesso em: 13 jun. 2026.