To cite package ‘BUSseq’ in publications use:

  Song F, Chan G, Wei Y (2021). _BUSseq: Batch Effect Correction with
  Unknow Subtypes for scRNA-seq data_. R package version 1.11.0,
  <https://bioconductor.org/packages/BUSseq>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {BUSseq: Batch Effect Correction with Unknow Subtypes for scRNA-seq data},
    author = {Fangda Song and Ga Ming Chan and Yingying Wei},
    year = {2021},
    note = {R package version 1.11.0},
    url = {https://bioconductor.org/packages/BUSseq},
  }