To cite package ‘DegreeDayCalc’ in publications use:

  Almaraz Valle VM, Rodríguez Maciel JC, Ramírez Valverde G, Urzúa
  Gutiérrez JA, Tejeda Reyes MA (2026). _Degree-Day Phenology
  Calculator: Modeling Thermal Requirements of Insect Life Stages_. R
  package (Shiny application),
  <https://github.com/almarazkrae-4081/DegreeDayCalc>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {Degree-Day Phenology Calculator: Modeling Thermal Requirements of Insect Life Stages},
    author = {Victor Manuel {Almaraz Valle} and Juan Concepción {Rodríguez Maciel} and Gustavo {Ramírez Valverde} and Jaime Alfredo {Urzúa Gutiérrez} and Manuel Alejandro {Tejeda Reyes}},
    year = {2026},
    note = {R package (Shiny application)},
    url = {https://github.com/almarazkrae-4081/DegreeDayCalc},
  }