To cite package ‘GOexpress’ in publications use:

  Rue-Albrecht K (2017). _GOexpress: Visualise microarray and RNAseq
  data using gene ontology annotations_. R package version 1.39.0,
  <https://bioconductor.org/packages/GOexpress>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {GOexpress: Visualise microarray and RNAseq data using gene ontology
annotations},
    author = {Kevin Rue-Albrecht},
    year = {2017},
    note = {R package version 1.39.0},
    url = {https://bioconductor.org/packages/GOexpress},
  }