| APA | GFD. (2012, February 14). In Acronym Geek. Retrieved 10:18, February 14, 2012, from http://www.acronymgeek.com/GFD |
| MLA | "GFD." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/GFD>. |
| MHRA | 'GFD', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/GFD> [accessed 14 February 2012] |
| Chicago | "GFD", http://www.acronymgeek.com/GFD (accessed February 14, 2012). |
| CBE/CSE | GFD [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/GFD. |
| Bluebook | GFD, http://www.acronymgeek.com/GFD (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GFD, http://www.acronymgeek.com/GFD (optional description here) (as of Feb. 14, 2012, 10:18). |
| AMA | GFD. Acronym Geek. February 14, 2012, 10:18. Available at: http://www.acronymgeek.com/GFD. Accessed February 14, 2012, 10:18. |