To cite 'saws' package use the following reference:

Fay MP, Graubard BI (2001). “Small-Sample Adjustments for Wald-Type Tests Using Sandwich Estimators.” Biometrics, 57, 1198–1206.

Corresponding BibTeX entry:

  @Article{,
    title = {Small-Sample Adjustments for Wald-Type Tests Using
      Sandwich Estimators},
    author = {Michael P. Fay and Barry I. Graubard},
    journal = {Biometrics},
    year = {2001},
    volume = {57},
    pages = {1198--1206},
  }