To cite package 'ChemometricsWithR in publications use:

Ron Wehrens (2012). Chemometrics With R: Multivariate Data Analysis in the Natural Sciences and Life Sciences. Springer, Heidelberg.

Corresponding BibTeX entry:

  @Book{,
    title = {Chemometrics With R: Multivariate Data Analysis in the
      Natural Sciences and Life Sciences},
    author = {Ron Wehrens Pinheiro},
    year = {2012},
    publisher = {Springer},
    address = {Heidelberg},
    doi = {10.1007/978-3-642-17841-2},
  }