Motivational properties of self-reinforcement.

@article{Kanfer1967MotivationalPO,
  title={Motivational properties of self-reinforcement.},
  author={Frederick H Kanfer and Pryse H Duerfeldt},
  journal={Perceptual and motor skills},
  year={1967},
  volume={25 1},
  pages={237-46}
}