To cite package ‘ASSIGN’ in publications use:

  Shen Y, Bild AH, Johnson WE, Rahman M, Jenkins D (2014). _ASSIGN:
  Adaptive Signature Selection and InteGratioN (ASSIGN)_. R package
  version 1.41.0, <https://bioconductor.org/packages/ASSIGN>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {ASSIGN: Adaptive Signature Selection and InteGratioN (ASSIGN)},
    author = {Ying Shen and Andrea H. Bild and W. Evan Johnson and Mumtehena Rahman and David Jenkins},
    year = {2014},
    note = {R package version 1.41.0},
    url = {https://bioconductor.org/packages/ASSIGN},
  }