Knysh A, Romanovskyi O, Pidbutska N, Shtuchenko I. CONNECTION BETWEEN PERSONAL PERFECTIONISM AND EFFICIENCY OF STUDENTS’ LEARNING ACTIVITIES. JECS [Internet]. 2020 Jun. 27 [cited 2024 Nov. 29];11(1):136-45. Available from: https://jecs.pl/index.php/jecs/article/view/1141