@article{550, year={1996}, issn={1972-5205}, journal={RISORSA UOMO }, number={2}, volume={}, doi={}, title={Motivation reconsidered: the concept of competence}, abstract={} url={http://www.francoangeli.it/Riviste/Scheda_rivista.aspx?idArticolo=550}, author={R. W. White} pages={}, language={EN}}