| APA | UTOS. (2012, February 15). In Acronym Geek. Retrieved 06:08, February 15, 2012, from http://www.acronymgeek.com/UTOS |
| MLA | "UTOS." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/UTOS>. |
| MHRA | 'UTOS', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/UTOS> [accessed 15 February 2012] |
| Chicago | "UTOS", http://www.acronymgeek.com/UTOS (accessed February 15, 2012). |
| CBE/CSE | UTOS [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/UTOS. |
| Bluebook | UTOS, http://www.acronymgeek.com/UTOS (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, UTOS, http://www.acronymgeek.com/UTOS (optional description here) (as of Feb. 15, 2012, 06:08). |
| AMA | UTOS. Acronym Geek. February 15, 2012, 06:08. Available at: http://www.acronymgeek.com/UTOS. Accessed February 15, 2012, 06:08. |