To cite package ‘iPath’ in publications use:

  Kenong Su, Steve Qin (2021): Pan-Cancer Analysis of Pathway-Based
  Gene Expression Pattern at the Individual Level Reveals Novel
  Biomarkers of Clinical Prognosis. doi:10.1016/j.crmeth.2021.100050

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Pan-Cancer Analysis of Pathway-Based Gene Expression Pattern at the Individual Level Reveals Novel Biomarkers of Clinical Prognosis},
    author = {Kenong Su and Steve Qin},
    year = {2021},
    journal = {Cell Reports Methods},
    year = {2021},
  }