To cite qcc in publications use:
Scrucca L (2004). “qcc: an R package for quality control charting and statistical process control.” R News, 4/1, 11–17. https://cran.r-project.org/doc/Rnews/.
Corresponding BibTeX entry:
@Article{, title = {qcc: an R package for quality control charting and statistical process control}, author = {Luca Scrucca}, journal = {R News}, year = {2004}, pages = {11--17}, volume = {4/1}, url = {https://cran.r-project.org/doc/Rnews/}, }