To cite the R package 'metaMA' in publications use:

G. Marot, J.-L. Foulley, C.-D. Mayer and F. Jaffrezic (2009) Moderated effect size and P-value combinations for microarray meta-analyses. Bioinformatics 25 (20): 2692-2699.

Corresponding BibTeX entry:

  @Article{,
    title = {Moderated effect size and P-value combinations for
      microarray meta-analyses},
    year = {2009},
    journal = {Bioinformatics},
    author = {Guillemette Marot and Jean-Louis Foulley and Claus-Dieter
      Mayer and Florence Jaffrezic},
    volume = {25},
    number = {20},
    pages = {2692--2699},
  }