| APA | XHU. (2012, February 14). In Acronym Geek. Retrieved 09:36, February 14, 2012, from http://www.acronymgeek.com/XHU |
| MLA | "XHU." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/XHU>. |
| MHRA | 'XHU', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/XHU> [accessed 14 February 2012] |
| Chicago | "XHU", http://www.acronymgeek.com/XHU (accessed February 14, 2012). |
| CBE/CSE | XHU [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/XHU. |
| Bluebook | XHU, http://www.acronymgeek.com/XHU (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, XHU, http://www.acronymgeek.com/XHU (optional description here) (as of Feb. 14, 2012, 09:36). |
| AMA | XHU. Acronym Geek. February 14, 2012, 09:36. Available at: http://www.acronymgeek.com/XHU. Accessed February 14, 2012, 09:36. |