To cite the CAMERA package in publications use:

  Kuhl, C., Tautenhahn, R., Boettcher, C., Larson, T. R. and Neumann,
  S. CAMERA: an integrated strategy for compound spectra extraction and
  annotation of liquid chromatography/mass spectrometry data sets.
  Analytical Chemistry, 84:283-289 (2012)

A BibTeX entry for LaTeX users is

  @Article{,
    author = {C. Kuhl and R. Tautenhahn and C. Boettcher and T. R. Larson and S. Neumann},
    title = {CAMERA: an integrated strategy for compound spectra extraction
  and annotation of liquid chromatography/mass spectrometry data sets},
    journal = {Analytical Chemistry},
    year = {2012},
    volume = {84},
    pages = {283--289},
    url = {http://pubs.acs.org/doi/abs/10.1021/ac202450g},
  }