Valkov, P., Lavrentsova, E. The effects of student-teacher and student-student relationship on school engagement. София: 2019 320-331,.
Valkov, P., Lavrentsova, E. The effects of student-teacher and student-student relationship on school engagement. София: 2019 320-331,.
Valkov, P., Lavrentsova, E. (2019) The effects of student-teacher and student-student relationship on school engagement, София: 320-331,.
Valkov, P., & Lavrentsova, E. (2019). The effects of student-teacher and student-student relationship on school engagement. An empirical research in Bulgaria. София: 320-331.
Valkov P, Lavrentsova E. The effects of student-teacher and student-student relationship on school engagement: An empirical research in Bulgaria. София: 2019. p. 320-331.
