To cite reshape in publications, please use:

H. Wickham. Reshaping data with the reshape package. Journal of Statistical Software, 21(12), 2007.

Corresponding BibTeX entry:

  @Article{,
    author = {Hadley Wickham},
    journal = {Journal of Statistical Software},
    number = {12},
    title = {Reshaping data with the reshape package},
    url = {http://www.jstatsoft.org/v21/i12/paper},
    volume = {21},
    year = {2007},
  }