@article {31502,
	title = {Enriching the Hierarchical Model of Achievement Motivation: Autonomous and Controlling Reasons Underlying Achievement Goals},
	journal = {British Journal of Educational Psychology},
	volume = {84},
	year = {2014},
	pages = {650-666},
	author = {Michou, A. and Vansteenkiste, M. and Mouratidis, A. and Lens, W.}
}
