To cite MWASTools:

Rodriguez-Martinez A, Ayala R, Posma JM, Neves AL, Anwar M, Pettreto E, Emanueli C, Gauguier D, Nicholson JK, Dumas ME. 2017. MWASTools: an R/Bioconductor package for metabolome-wide association studies. Bioinformatics

Corresponding BibTeX entry:

  @Article{,
    author = {Andrea Rodriguez-Martinez and Joram M Posma and Rafael
      Ayala and Ana L Neves and Maryam Anwar and Enrico Petretto and
      Constanza Emanueli and Dominique Gauguier and Jeremy K Nicholson
      and Marc-Emmanuel Dumas},
    title = {MWASTools: an R/Bioconductor package for metabolome-wide
      association studies},
    journal = {Bioinformatics},
    year = {2017},
    doi = {https://doi.org/10.1093/bioinformatics/btx477},
  }