| APA | XPA. (2012, February 13). In Acronym Geek. Retrieved 20:50, February 13, 2012, from http://www.acronymgeek.com/XPA |
| MLA | "XPA." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/XPA>. |
| MHRA | 'XPA', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/XPA> [accessed 13 February 2012] |
| Chicago | "XPA", http://www.acronymgeek.com/XPA (accessed February 13, 2012). |
| CBE/CSE | XPA [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/XPA. |
| Bluebook | XPA, http://www.acronymgeek.com/XPA (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, XPA, http://www.acronymgeek.com/XPA (optional description here) (as of Feb. 13, 2012, 20:50). |
| AMA | XPA. Acronym Geek. February 13, 2012, 20:50. Available at: http://www.acronymgeek.com/XPA. Accessed February 13, 2012, 20:50. |