To cite package ‘apex’ in publications use:

Schliep K, Jombart T, Kamvar Z, Archer E, Harris R (2025). apex: Phylogenetic Methods for Multiple Gene Data. R package version 1.0.7, https://github.com/thibautjombart/apex.

Corresponding BibTeX entry:

  @Manual{,
    title = {apex: Phylogenetic Methods for Multiple Gene Data},
    author = {Klaus Schliep and Thibaut Jombart and Zhian Namir Kamvar
      and Eric Archer and Rebecca Harris},
    year = {2025},
    note = {R package version 1.0.7},
    url = {https://github.com/thibautjombart/apex},
  }