To cite package ‘SUMMER’ in publications use:

  Li Z, Martin B, Hsiao Y, Godwin J, Paige J, Gao P, Wakefield J, Clark
  S, Fuglstad G, Riebler A (2024). _SUMMER: Small-Area-Estimation
  Unit/Area Models and Methods for Estimation in R_. R package version
  1.4.1, , <https://github.com/richardli/summer>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {SUMMER: Small-Area-Estimation Unit/Area Models and Methods for
Estimation in R},
    author = {Zehang R Li and Bryan D Martin and Yuan Hsiao and Jessica Godwin and John Paige and Peter Gao and Jon Wakefield and Samuel J Clark and Geir-Arne Fuglstad and Andrea Riebler},
    year = {2024},
    note = {R package version 1.4.1, 
},
    url = {https://github.com/richardli/summer},
  }