Preliminary validation in Spanish of a scale designed to measure motivation in physical education classes: the Perceived Locus of Causality (PLOC) Scale. Murcia JAM. JAM Murcia, DGC Coll, MC Garzón - The Spanish journal of …, 2009 - cambridge.org GSID: 0spNHI7WsUsJ
Noncognitive skills in the classroom: New perspectives on educational research. Glennie EJ, Dalton BW. JA Rosen, EJ Glennie, BW Dalton, JM Lennon… - 2010 - books.google.com GSID: R1DsdwsQI7kJ
Achievement goal theories in sport. Harwood C, Keegan R, Spray CM. C Harwood, CM Spray, R Keegan - 2008 - psycnet.apa.org GSID: PO2UPa8PmdUJ