Ranđelović DJ, Lazarević D Đ., Pavićević MS. Reliability and Validity of the Instrument Assessing the Effectiveness of Online and Regular Classroom Lessons. Zb rad Filoz fak Priština [Internet]. 2022 Nov. 8 [cited 2026 Jul. 12];52(4). Available from: https://asistent.ceon.rs/index.php/zrffp/article/view/40673