TY - JOUR A1 - Sheppard, B.H. A1 - Hartwick, J. A1 - Warshaw, P.R. T1 - The theory of reasoned action: A meta-analysis of past research with recommendations for modifications and future research Y1 - 1988 DO - 10.1086/209170 JF - Journal of Consumer Research VL - 15 IS - 3 SP - 325 EP - -343 ER -