| APA | GFCK. (2012, February 14). In Acronym Geek. Retrieved 20:16, February 14, 2012, from http://www.acronymgeek.com/GFCK |
| MLA | "GFCK." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/GFCK>. |
| MHRA | 'GFCK', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/GFCK> [accessed 14 February 2012] |
| Chicago | "GFCK", http://www.acronymgeek.com/GFCK (accessed February 14, 2012). |
| CBE/CSE | GFCK [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/GFCK. |
| Bluebook | GFCK, http://www.acronymgeek.com/GFCK (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GFCK, http://www.acronymgeek.com/GFCK (optional description here) (as of Feb. 14, 2012, 20:16). |
| AMA | GFCK. Acronym Geek. February 14, 2012, 20:16. Available at: http://www.acronymgeek.com/GFCK. Accessed February 14, 2012, 20:16. |