To cite the Spectra package in publications use:

Rainer J, De Graeve M, Louail P, Gibb S, Gatto L. An Open Infrastructure for Mass Spectrometry Data in R. Methods Mol Biol. 2027;3071:29-54.<doi:10.1007/978-1-0716-5519-1_3>. PMID: 42878754.

Rainer J, Vicini A, Salzer L, Stanstrup J, Badia JM, Neumann S, Stravs MA, Verri Hernandes V, Gatto L, Gibb S and Wittin M. A Modular and Expandable Ecosystem for Metabolomics Data Annotation in R Metabolites 2022, 12, 173. https://doi.org/10.3390/metabo12020173

Corresponding BibTeX entries:

  @Article{,
    title = {An Open Infrastructure for Mass Spectrometry Data in R},
    author = {Johannes Rainer and Marilyn {De Graeve} and Philippine
      Louail and Sebastian Gibb and Laurent Gatto},
    journal = {Methods in Molecular Biology},
    year = {2027},
    doi = {10.1007/978-1-0716-5519-1_3},
    pages = {29-54},
  }

  @Article{,
    title = {A Modular and Expandable Ecosystem for Metabolomics Data
      Annotation in R},
    author = {Johannes Rainer and Andrea Vicini and Liesa Salzer and
      Jan Stanstrup and Josep M. Badia and Steffen Neumann and Michael
      A. Stravs and Vinicius {Verri Hernandes} and Laurent Gatto and
      Sebastian Gibb and Michael Witting},
    journal = {Metabolites},
    year = {2022},
    doi = {10.3390/metabo12020173},
    url = {https://www.mdpi.com/2218-1989/12/2/173},
    volume = {12},
    pages = {173},
  }