| APA | GFDE. (2012, February 10). In Acronym Geek. Retrieved 09:57, February 10, 2012, from http://www.acronymgeek.com/GFDE |
| MLA | "GFDE." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/GFDE>. |
| MHRA | 'GFDE', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/GFDE> [accessed 10 February 2012] |
| Chicago | "GFDE", http://www.acronymgeek.com/GFDE (accessed February 10, 2012). |
| CBE/CSE | GFDE [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/GFDE. |
| Bluebook | GFDE, http://www.acronymgeek.com/GFDE (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GFDE, http://www.acronymgeek.com/GFDE (optional description here) (as of Feb. 10, 2012, 09:57). |
| AMA | GFDE. Acronym Geek. February 10, 2012, 09:57. Available at: http://www.acronymgeek.com/GFDE. Accessed February 10, 2012, 09:57. |