@article{schumacker2004,
  title={A Beginner's Guide to Structural Equation Modeling},
  author={Randall E. Schumacker and Richard G. Lomax},
  year={2004},
  journal={Psychology Press eBooks},
  doi={10.4324/9781410610904},
  url={https://doi.org/10.4324/9781410610904}
}