| APA | ULF. (2012, February 14). In Acronym Geek. Retrieved 10:16, February 14, 2012, from http://www.acronymgeek.com/ULF |
| MLA | "ULF." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/ULF>. |
| MHRA | 'ULF', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/ULF> [accessed 14 February 2012] |
| Chicago | "ULF", http://www.acronymgeek.com/ULF (accessed February 14, 2012). |
| CBE/CSE | ULF [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/ULF. |
| Bluebook | ULF, http://www.acronymgeek.com/ULF (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ULF, http://www.acronymgeek.com/ULF (optional description here) (as of Feb. 14, 2012, 10:16). |
| AMA | ULF. Acronym Geek. February 14, 2012, 10:16. Available at: http://www.acronymgeek.com/ULF. Accessed February 14, 2012, 10:16. |