To cite prewas in publications use:

Saund* K, Lapp* Z, Thiede* SN, Pirani A, Snitkin ES (2020). “prewas: data pre-processing for more informative bacterial GWAS.” Microbial Genomics, 6(5).

Corresponding BibTeX entry:

  @Article{,
    title = {prewas: data pre-processing for more informative bacterial
      GWAS},
    author = {Katie Saund* and Zena Lapp* and Stephanie N. Thiede* and
      Ali Pirani and Evan S. Snitkin},
    journal = {Microbial Genomics},
    year = {2020},
    volume = {6},
    number = {5},
  }