| APA | GFDU. (2012, February 15). In Acronym Geek. Retrieved 13:09, February 15, 2012, from http://www.acronymgeek.com/GFDU |
| MLA | "GFDU." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/GFDU>. |
| MHRA | 'GFDU', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/GFDU> [accessed 15 February 2012] |
| Chicago | "GFDU", http://www.acronymgeek.com/GFDU (accessed February 15, 2012). |
| CBE/CSE | GFDU [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/GFDU. |
| Bluebook | GFDU, http://www.acronymgeek.com/GFDU (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GFDU, http://www.acronymgeek.com/GFDU (optional description here) (as of Feb. 15, 2012, 13:09). |
| AMA | GFDU. Acronym Geek. February 15, 2012, 13:09. Available at: http://www.acronymgeek.com/GFDU. Accessed February 15, 2012, 13:09. |