| APA | XKF. (2012, February 14). In Acronym Geek. Retrieved 11:34, February 14, 2012, from http://www.acronymgeek.com/XKF |
| MLA | "XKF." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/XKF>. |
| MHRA | 'XKF', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/XKF> [accessed 14 February 2012] |
| Chicago | "XKF", http://www.acronymgeek.com/XKF (accessed February 14, 2012). |
| CBE/CSE | XKF [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/XKF. |
| Bluebook | XKF, http://www.acronymgeek.com/XKF (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, XKF, http://www.acronymgeek.com/XKF (optional description here) (as of Feb. 14, 2012, 11:34). |
| AMA | XKF. Acronym Geek. February 14, 2012, 11:34. Available at: http://www.acronymgeek.com/XKF. Accessed February 14, 2012, 11:34. |