Ajzen, I.(2002). Residual effects of past on later behavior: Habituation and reasoned action perspectives. Personality and Social Psychology Review, 6, 107-122.
Ajzen, I.& Fishbein, M.(1980) Understanding allitudes and predicting social behavior. Upper Saddle River, NJ: Prentice-Hall.
Armitage, C. J.& Conner, M.(2001) Efficacy of theory of planned behaviour: A metaanalytic review. British Journal of Social Psychology, 40, 471-499.
Baggozi, R. P.& Edwards, J. R.(1998). A general approach for representing constructs in organizational research. Organizational Research Methods, 1, 45 87.