| APA | URFO. (2012, February 10). In Acronym Geek. Retrieved 09:58, February 10, 2012, from http://www.acronymgeek.com/URFO |
| MLA | "URFO." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/URFO>. |
| MHRA | 'URFO', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/URFO> [accessed 10 February 2012] |
| Chicago | "URFO", http://www.acronymgeek.com/URFO (accessed February 10, 2012). |
| CBE/CSE | URFO [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/URFO. |
| Bluebook | URFO, http://www.acronymgeek.com/URFO (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, URFO, http://www.acronymgeek.com/URFO (optional description here) (as of Feb. 10, 2012, 09:58). |
| AMA | URFO. Acronym Geek. February 10, 2012, 09:58. Available at: http://www.acronymgeek.com/URFO. Accessed February 10, 2012, 09:58. |