| APA | KFO. (2012, February 14). In Acronym Geek. Retrieved 07:13, February 14, 2012, from http://www.acronymgeek.com/KFO |
| MLA | "KFO." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/KFO>. |
| MHRA | 'KFO', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/KFO> [accessed 14 February 2012] |
| Chicago | "KFO", http://www.acronymgeek.com/KFO (accessed February 14, 2012). |
| CBE/CSE | KFO [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/KFO. |
| Bluebook | KFO, http://www.acronymgeek.com/KFO (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, KFO, http://www.acronymgeek.com/KFO (optional description here) (as of Feb. 14, 2012, 07:13). |
| AMA | KFO. Acronym Geek. February 14, 2012, 07:13. Available at: http://www.acronymgeek.com/KFO. Accessed February 14, 2012, 07:13. |