To cite package 'RQDA' in publications use:

HUANG, Ronggui. (2017). RQDA: R-based Qualitative Data Analysis. R package version 0.3-0. URL http://rqda.r-forge.r-project.org.

Corresponding BibTeX entry:

  @Manual{,
    title = {RQDA: R-based Qualitative Data Analysis},
    author = {Ronggui HUANG},
    year = {2017},
    note = {R package version 0.3-0},
    url = {http://rqda.r-forge.r-project.org},
  }