To cite package ‘ordering’ in publications use:

Brown C (2019). ordering: Test, Check, Verify, Investigate the Monotonic Properties of Vectors. R package version 0.7.1, https://github.com/decisionpatterns/ordering.

Corresponding BibTeX entry:

  @Manual{,
    title = {ordering: Test, Check, Verify, Investigate the Monotonic
      Properties of Vectors},
    author = {Christopher Brown},
    year = {2019},
    note = {R package version 0.7.1},
    url = {https://github.com/decisionpatterns/ordering},
  }