To cite modsem in publications use:

Slupphaug K, Mehmetoglu M, Mittner M (2025). “modsem: An R package for estimating latent interactions and quadratic effects.” Structural Equation Modeling: A Multidisciplinary Journal, 32(4), 717-729. doi:10.1080/10705511.2024.2417409.

Corresponding BibTeX entry:

  @Article{,
    title = {modsem: An R package for estimating latent interactions
      and quadratic effects},
    author = {Kjell Solem Slupphaug and Mehmet Mehmetoglu and Matthias
      Mittner},
    journal = {Structural Equation Modeling: A Multidisciplinary
      Journal},
    year = {2025},
    volume = {32},
    number = {4},
    pages = {717-729},
    doi = {10.1080/10705511.2024.2417409},
  }