To cite semPLS in publications use:

Armin Monecke, Friedrich Leisch (2012). semPLS: Structural Equation Modeling Using Partial Least Squares. Journal of Statistical Software, 48(3), 1-32. URL http://www.jstatsoft.org/v48/i03/.

Corresponding BibTeX entry:

  @Article{,
    title = {{semPLS}: Structural Equation Modeling Using Partial Least
      Squares},
    author = {Armin Monecke and Friedrich Leisch},
    journal = {Journal of Statistical Software},
    year = {2012},
    volume = {48},
    number = {3},
    pages = {1--32},
    url = {http://www.jstatsoft.org/v48/i03/},
  }