To cite dscore in publications use:

van Buuren S, Eekhout I, Huizing A (2020). D-score for Child Development. R package version 1.0.0, https://github.com/d-score/dscore.

Corresponding BibTeX entry:

  @Manual{dscore-package,
    title = {D-score for Child Development},
    author = {S. {van Buuren} and I. Eekhout and A. Huizing},
    year = {2020},
    note = {R package version 1.0.0},
    url = {https://github.com/d-score/dscore},
  }