To cite package ‘fspe’ in publications use:

Haslbeck J (2023). fspe: Estimating the Number of Factors in EFA with Out-of-Sample Prediction Errors. R package version 0.1.2, https://github.com/jmbh/fspe.

Corresponding BibTeX entry:

  @Manual{,
    title = {fspe: Estimating the Number of Factors in EFA with
      Out-of-Sample Prediction Errors},
    author = {Jonas Haslbeck},
    year = {2023},
    note = {R package version 0.1.2},
    url = {https://github.com/jmbh/fspe},
  }