| APA | KFX. (2012, February 11). In Acronym Geek. Retrieved 21:04, February 11, 2012, from http://www.acronymgeek.com/KFX |
| MLA | "KFX." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/KFX>. |
| MHRA | 'KFX', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/KFX> [accessed 11 February 2012] |
| Chicago | "KFX", http://www.acronymgeek.com/KFX (accessed February 11, 2012). |
| CBE/CSE | KFX [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/KFX. |
| Bluebook | KFX, http://www.acronymgeek.com/KFX (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, KFX, http://www.acronymgeek.com/KFX (optional description here) (as of Feb. 11, 2012, 21:04). |
| AMA | KFX. Acronym Geek. February 11, 2012, 21:04. Available at: http://www.acronymgeek.com/KFX. Accessed February 11, 2012, 21:04. |