Please cite the package as follows:

  Leo Lahti et al.  microbiome R package.  URL:
  http://microbiome.github.io

A BibTeX entry for LaTeX users is

  @Misc{,
    title = {microbiome R package},
    author = {Leo Lahti and Sudarshan Shetty},
    year = {2012-2019},
  }