To cite the R package isni in publications use:

Xie, H., Gao,W., Xing, B., Heitjan, D, Hedeker, D and Yuan, C.(2018). Measuring the Impact of Nonignorable Missingness Using the R packaeg {isni}. Computer Methods and Programs in Biomedicine, 164, 207-220. URL https://doi.org/10.1016/j.cmpb.2018.06.014.

For other citations, please check the References section of individual isni functions

Corresponding BibTeX entry:

  @Article{,
    title = {Measuring the Impact of Nonignorable Missingness Using the
      R packaeg {isni}},
    author = {Hui Xie and Weihua Gao and Baodong Xing and Daniel
      Heitjan and Donald Hedeker and Chengbo Yuan},
    journal = {Computer Methods and Programs in Biomedicine},
    year = {2018},
    number = {164},
    pages = {207--220},
    url = {https://doi.org/10.1016/j.cmpb.2018.06.014},
  }