%0 Journal Article %T Antecedents of academic emotions: Testing the internal/external frame of reference model for academic enjoyment %A Goetz, Thomas %A Frenzel, Anne C. %A Hall, Nathan C. %A Pekrun, Reinhard %A , %J Contemporary Educational Psychology %@ 0361-476X %D 2008-01-01 %I Elsevier BV %~ DeepDyve