To cite package ‘gsdd’ in publications use:

  Thorley J, Lyons S (2024). _gsdd: Calculate Growing Season Degree
  Days from Water Temperature Data_. R package version 0.3.0.9000, ,
  <https://github.com/poissonconsulting/gsdd>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {gsdd: Calculate Growing Season Degree Days from Water Temperature Data},
    author = {Joe Thorley and Sarah Lyons},
    year = {2024},
    note = {R package version 0.3.0.9000, 
},
    url = {https://github.com/poissonconsulting/gsdd},
  }