| APA | XPES. (2012, February 16). In Acronym Geek. Retrieved 10:11, February 16, 2012, from http://www.acronymgeek.com/XPES |
| MLA | "XPES." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/XPES>. |
| MHRA | 'XPES', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/XPES> [accessed 16 February 2012] |
| Chicago | "XPES", http://www.acronymgeek.com/XPES (accessed February 16, 2012). |
| CBE/CSE | XPES [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/XPES. |
| Bluebook | XPES, http://www.acronymgeek.com/XPES (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, XPES, http://www.acronymgeek.com/XPES (optional description here) (as of Feb. 16, 2012, 10:11). |
| AMA | XPES. Acronym Geek. February 16, 2012, 10:11. Available at: http://www.acronymgeek.com/XPES. Accessed February 16, 2012, 10:11. |