To cite package ‘GramQuad’ in publications use:

  Giné-Vázquez I, Muhammad I (2022). _GramQuad: Gram Quadrature_. R
  package version 0.1.1, <https://gitlab.com/iagogv/gramquad>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {GramQuad: Gram Quadrature},
    author = {Iago Giné-Vázquez and Irfan Muhammad},
    year = {2022},
    note = {R package version 0.1.1},
    url = {https://gitlab.com/iagogv/gramquad},
  }