| APA | UL. (2012, February 14). In Acronym Geek. Retrieved 06:19, February 14, 2012, from http://www.acronymgeek.com/UL |
| MLA | "UL." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/UL>. |
| MHRA | 'UL', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/UL> [accessed 14 February 2012] |
| Chicago | "UL", http://www.acronymgeek.com/UL (accessed February 14, 2012). |
| CBE/CSE | UL [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/UL. |
| Bluebook | UL, http://www.acronymgeek.com/UL (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, UL, http://www.acronymgeek.com/UL (optional description here) (as of Feb. 14, 2012, 06:19). |
| AMA | UL. Acronym Geek. February 14, 2012, 06:19. Available at: http://www.acronymgeek.com/UL. Accessed February 14, 2012, 06:19. |