To cite the memuse package or memuse vignette:

  Schmidt D (????). “memuse: Memory Estimation Utilities.” R package
  version 4.2-3, <https://cran.r-project.org/package=memuse>.

A BibTeX entry for LaTeX users is

  @Misc{memusePackage,
    title = {{memuse}: Memory Estimation Utilities},
    author = {Drew Schmidt},
    note = {{R} package version 4.2-3},
    url = {https://cran.r-project.org/package=memuse},
  }

  Schmidt D (????). _Guide to the memuse Package_. R package vignette,
  <https://cran.r-project.org/package=memuse>.

A BibTeX entry for LaTeX users is

  @Manual{memusePackageGuide,
    title = {Guide to the memuse Package},
    author = {Drew Schmidt},
    note = {{R} package vignette},
    url = {https://cran.r-project.org/package=memuse},
  }