Polyakova, L. Professional competence as the teacher's success factor. Габрово: 2015 249-253,.
Polyakova, L. Professional competence as the teacher's success factor. Габрово: 2015 249-253,.
Polyakova, L. (2015) Professional competence as the teacher's success factor, Габрово: 249-253,.
Polyakova, L. (2015). Professional competence as the teacher's success factor. Теория и практика на психолого-педагогическата подготовка на специалиста в университета (с. 249-253). Габрово: Кн. 1 Т. 1 (1).
Polyakova L. Professional competence as the teacher's success factor. Габрово: 2015. p. 249-253.