Zeitschriftenartikel
Trautwein, U., &
Lüdtke, O. (2009). Predicting homework motivation and homework effort in six school subjects: The role of person and family characteristics, classroom factors, and school track.
Learning and Instruction,
19(3), 243–258. https://doi.org/10.1016/j.learninstruc.2008.05.001