To cite package ‘slingshot’ in publications use:

  K. Street, D. Risso, RB. Fletcher, D. Das, J. Ngai, N. Yosef, E.
  Purdom, and S. Dudoit (2018). Slingshot: cell lineage and pseudotime
  inference for single-cell transcriptomics. BMC Genomics.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Slingshot: cell lineage and pseudotime inference for single-cell transcriptomics},
    author = {Kelly Street and Davide Risso and Russell B. Fletcher and Diya Das and John Ngai and Nir Yosef and Elizabeth Purdom and Sandrine Dudoit},
    year = {2018},
    pages = {477},
    journal = {BMC Genomics},
    url = {https://doi.org/10.1186/s12864-018-4772-0},
  }