| APA | GFDK. (2012, February 14). In Acronym Geek. Retrieved 20:23, February 14, 2012, from http://www.acronymgeek.com/GFDK |
| MLA | "GFDK." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/GFDK>. |
| MHRA | 'GFDK', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/GFDK> [accessed 14 February 2012] |
| Chicago | "GFDK", http://www.acronymgeek.com/GFDK (accessed February 14, 2012). |
| CBE/CSE | GFDK [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/GFDK. |
| Bluebook | GFDK, http://www.acronymgeek.com/GFDK (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GFDK, http://www.acronymgeek.com/GFDK (optional description here) (as of Feb. 14, 2012, 20:23). |
| AMA | GFDK. Acronym Geek. February 14, 2012, 20:23. Available at: http://www.acronymgeek.com/GFDK. Accessed February 14, 2012, 20:23. |