| APA | KPEO. (2012, February 15). In Acronym Geek. Retrieved 16:20, February 15, 2012, from http://www.acronymgeek.com/KPEO |
| MLA | "KPEO." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/KPEO>. |
| MHRA | 'KPEO', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/KPEO> [accessed 15 February 2012] |
| Chicago | "KPEO", http://www.acronymgeek.com/KPEO (accessed February 15, 2012). |
| CBE/CSE | KPEO [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/KPEO. |
| Bluebook | KPEO, http://www.acronymgeek.com/KPEO (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, KPEO, http://www.acronymgeek.com/KPEO (optional description here) (as of Feb. 15, 2012, 16:20). |
| AMA | KPEO. Acronym Geek. February 15, 2012, 16:20. Available at: http://www.acronymgeek.com/KPEO. Accessed February 15, 2012, 16:20. |