| APA | KHFO. (2012, February 16). In Acronym Geek. Retrieved 23:20, February 16, 2012, from http://www.acronymgeek.com/KHFO |
| MLA | "KHFO." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/KHFO>. |
| MHRA | 'KHFO', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/KHFO> [accessed 16 February 2012] |
| Chicago | "KHFO", http://www.acronymgeek.com/KHFO (accessed February 16, 2012). |
| CBE/CSE | KHFO [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/KHFO. |
| Bluebook | KHFO, http://www.acronymgeek.com/KHFO (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, KHFO, http://www.acronymgeek.com/KHFO (optional description here) (as of Feb. 16, 2012, 23:20). |
| AMA | KHFO. Acronym Geek. February 16, 2012, 23:20. Available at: http://www.acronymgeek.com/KHFO. Accessed February 16, 2012, 23:20. |