| APA | XPI. (2012, February 14). In Acronym Geek. Retrieved 09:35, February 14, 2012, from http://www.acronymgeek.com/XPI |
| MLA | "XPI." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/XPI>. |
| MHRA | 'XPI', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/XPI> [accessed 14 February 2012] |
| Chicago | "XPI", http://www.acronymgeek.com/XPI (accessed February 14, 2012). |
| CBE/CSE | XPI [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/XPI. |
| Bluebook | XPI, http://www.acronymgeek.com/XPI (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, XPI, http://www.acronymgeek.com/XPI (optional description here) (as of Feb. 14, 2012, 09:35). |
| AMA | XPI. Acronym Geek. February 14, 2012, 09:35. Available at: http://www.acronymgeek.com/XPI. Accessed February 14, 2012, 09:35. |