To cite ebirdst in publications use:

Tom Auer, Daniel Fink, and Matthew Strimas-Mackey (2019). ebirdst: Tools for loading, plotting, mapping and analysis of eBird Status and Trends data products. R package version 0.1.0. https://cornelllabofornithology.github.io/ebirdst/

Corresponding BibTeX entry:

  @Manual{,
    title = {ebirdst: Tools for loading, plotting, mapping and analysis
      of eBird Status and Trends data products},
    author = {Tom Auer and Daniel Fink and Matthew Strimas-Mackey},
    year = {2019},
    note = {R package version 0.1.0},
    url = {https://cornelllabofornithology.github.io/ebirdst/},
  }