To cite BayesLCA in publications use:

Arthur White, Thomas Brendan Murphy (2014). BayesLCA: An R Package for Bayesian Latent Class Analysis. Journal of Statistical Software, 61(13), 1-28. URL http://www.jstatsoft.org/v61/i13/.

Corresponding BibTeX entry:

  @Article{,
    title = {{BayesLCA}: An {R} Package for Bayesian Latent Class
      Analysis},
    author = {Arthur White and Thomas Brendan Murphy},
    journal = {Journal of Statistical Software},
    year = {2014},
    volume = {61},
    number = {13},
    pages = {1--28},
    url = {http://www.jstatsoft.org/v61/i13/},
  }