Proper, K., van der Beek, A. J., Hildebrandt, V., Twisk, J., & van Mechelen, W. (2003). Short term effect of feedback on fitness and health measurements on self reported appraisal of the stage of change. BMJ Group.

Proper, K., A J. van der Beek, V. Hildebrandt, J. Twisk, and W. van Mechelen. Short Term Effect of Feedback On Fitness and Health Measurements On Self Reported Appraisal of the Stage of Change. BMJ Group, 2003.

Proper, K., et al. Short Term Effect of Feedback On Fitness and Health Measurements On Self Reported Appraisal of the Stage of Change. BMJ Group, 2003.