To cite DTRreg in publications use:

Wallace MP, Moodie EEM and Stephens DA (2017). “Dynamic Treatment Regimen Estimation via Regression-Based Techniques: Introducing R Package DTRreg.” Journal of Statistical Software, 80(2), pp. 1–20. doi: 10.18637/jss.v080.i02.

Corresponding BibTeX entry:

  @Article{,
    title = {Dynamic Treatment Regimen Estimation via Regression-Based
      Techniques: Introducing {R} Package {DTRreg}},
    author = {Michael P. Wallace and Erica E. M. Moodie and David A.
      Stephens},
    journal = {Journal of Statistical Software},
    year = {2017},
    volume = {80},
    number = {2},
    pages = {1--20},
    doi = {10.18637/jss.v080.i02},
  }