To cite PDAL in publications use:

  PDAL contributors (2018). PDAL: The Point Data Abstraction Library
  URL https://pdal.io/.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {{PDAL}: The Point Data Abstraction Library},
    author = {{PDAL contributors}},
    year = {2018},
    url = {https://pdal.io/},
  }
