| APA | HXU. (2012, February 14). In Acronym Geek. Retrieved 04:04, February 14, 2012, from http://www.acronymgeek.com/HXU |
| MLA | "HXU." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/HXU>. |
| MHRA | 'HXU', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/HXU> [accessed 14 February 2012] |
| Chicago | "HXU", http://www.acronymgeek.com/HXU (accessed February 14, 2012). |
| CBE/CSE | HXU [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/HXU. |
| Bluebook | HXU, http://www.acronymgeek.com/HXU (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HXU, http://www.acronymgeek.com/HXU (optional description here) (as of Feb. 14, 2012, 04:04). |
| AMA | HXU. Acronym Geek. February 14, 2012, 04:04. Available at: http://www.acronymgeek.com/HXU. Accessed February 14, 2012, 04:04. |