To cite LSAfun in publications use:

Guenther, F., Dudschig, C., & Kaup, B. (2015). LSAfun: An R package for computations based on Latent Semantic Analysis. Behavior Research Methods, 47(4), 930--944.<doi:10.3758/s13428-014-0529-0>.

Corresponding BibTeX entry:

  @Article{,
    title = {LSAfun: An R package for computations based on Latent
      Semantic Analysis},
    author = {Fritz G{\"u}nther and Carolin Dudschig and Barbara Kaup},
    journal = {Behavior Research Methods},
    year = {2015},
    volume = {47},
    number = {4},
    pages = {930--944},
    doi = {10.3758/s13428-014-0529-0},
  }