To cite the 'googlePublicData' package in publications use:

George Vega Y.. An R library to build Google's Public Data Explorer DSPL Metadata files.

Corresponding BibTeX entry:

  @Manual{,
    title = {googlePublicData: An R library to build Google's Public
      Data Explorer DSPL Metadata file},
    author = {George Vega Yon},
    year = {2012},
    month = {May},
    url = {http://code.google.com/rdspl},
  }