| APA | XPAS. (2012, February 15). In Acronym Geek. Retrieved 23:58, February 15, 2012, from http://www.acronymgeek.com/XPAS |
| MLA | "XPAS." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/XPAS>. |
| MHRA | 'XPAS', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/XPAS> [accessed 15 February 2012] |
| Chicago | "XPAS", http://www.acronymgeek.com/XPAS (accessed February 15, 2012). |
| CBE/CSE | XPAS [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/XPAS. |
| Bluebook | XPAS, http://www.acronymgeek.com/XPAS (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, XPAS, http://www.acronymgeek.com/XPAS (optional description here) (as of Feb. 15, 2012, 23:58). |
| AMA | XPAS. Acronym Geek. February 15, 2012, 23:58. Available at: http://www.acronymgeek.com/XPAS. Accessed February 15, 2012, 23:58. |