@article{SchaffnerSchiefeleUlferts2013,
  author    = {Ellen Schaffner and Ulrich Schiefele and Hannah Ulferts},
  title     = {Reading amount as a mediator of the effects of intrinsic and extrinsic reading motivation on reading comprehension},
  journal   = {Reading research quarterly},
  volume    = {48},
  number    = {4},
  pages     = {369 -- 385},
  doi       = {10.1002/rrq.52},
  year      = {2013},
}