TY - JOUR A1 - Rivis, A. A1 - Sheeran, P. T1 - Social influences and the theory of planned behaviour: Evidence for a direct relationship between prototypes and young people's exercise behaviour Y1 - 2003 DO - 10.1080/0887044032000069883 JF - Psychology and Health VL - 18 IS - 5 SP - 567 EP - -583 ER -