| APA | ULX. (2012, February 10). In Acronym Geek. Retrieved 11:23, February 10, 2012, from http://www.acronymgeek.com/ULX |
| MLA | "ULX." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/ULX>. |
| MHRA | 'ULX', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/ULX> [accessed 10 February 2012] |
| Chicago | "ULX", http://www.acronymgeek.com/ULX (accessed February 10, 2012). |
| CBE/CSE | ULX [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/ULX. |
| Bluebook | ULX, http://www.acronymgeek.com/ULX (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ULX, http://www.acronymgeek.com/ULX (optional description here) (as of Feb. 10, 2012, 11:23). |
| AMA | ULX. Acronym Geek. February 10, 2012, 11:23. Available at: http://www.acronymgeek.com/ULX. Accessed February 10, 2012, 11:23. |