To cite fgui in publications use:
Hoffmann TJ, Laird NM (2009). “fgui: A Method for Automatically Creating Graphical User Interfaces for Command-Line R Packages.” Journal of Statistical Software, 30(2), 1–14. http://www.jstatsoft.org/v30/i02/.
Corresponding BibTeX entry:
@Article{,
title = {{fgui}: A Method for Automatically Creating Graphical User
Interfaces for Command-Line {R} Packages},
author = {Thomas J. Hoffmann and Nan M. Laird},
journal = {Journal of Statistical Software},
year = {2009},
volume = {30},
number = {2},
pages = {1--14},
url = {http://www.jstatsoft.org/v30/i02/},
}