Resumo. ABSTRACT The objective of the study was to analyze the implications of the sources that construct the perception of self-efficacy in teaching. A total of 274 university students from two undergraduate courses in Physical Education in Southern Brazil participated in the research.The scales of teacher self-efficacy and the self-efficacy sources were applied. Multilevel regression models were used to verify the contribution of the sources of teacher self-efficacy to the perception of the university students. The results showed that the university students had high levels of self-efficacy. The sources of self-efficacy revealed that vicarious experiences had a moderate correlation with level of perception. They also showed that direct experiences contributed to the level of perception of university students with teaching experience, in upper levels of the course, and who underwent mandatory internships. This was similar to the vicarious source for those with teaching experience, as well as the source of social persuasion, which affects university students with sports and/or teaching experience. Lastly, the source of physiological states contributed to mandatory internships, teaching experience, and progression in the course. In conlcusion, the students perceive themselves as self-efficacious, the source of vicarious experience had a high perception, and other sources contributed to the teachers’ self-efficacy.