Cognitive and emotional components of test anxiety: a distinction and some initial data.

@article{Liebert1967CognitiveAE,
  title={Cognitive and emotional components of test anxiety: a distinction and some initial data.},
  author={R M Liebert and Lorna W Morris},
  journal={Psychological reports},
  year={1967},
  volume={20 3},
  pages={975-8}
}