Journal Article
Jekauc, D.,
Voelkle, M. C.,
Wagner, M. O.,
Mewes, N., &
Woll, A. (2013). Reliability, validity, and measurement invariance of the German version of the Physical Activity Enjoyment Scale.
Journal of Pediatric Psychology,
38(1), 104–115. https://doi.org/10.1093/jpepsy/jss088