| APA | SOOU. (2012, February 15). In Acronym Geek. Retrieved 05:50, February 15, 2012, from http://www.acronymgeek.com/SOOU |
| MLA | "SOOU." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/SOOU>. |
| MHRA | 'SOOU', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/SOOU> [accessed 15 February 2012] |
| Chicago | "SOOU", http://www.acronymgeek.com/SOOU (accessed February 15, 2012). |
| CBE/CSE | SOOU [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/SOOU. |
| Bluebook | SOOU, http://www.acronymgeek.com/SOOU (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SOOU, http://www.acronymgeek.com/SOOU (optional description here) (as of Feb. 15, 2012, 05:50). |
| AMA | SOOU. Acronym Geek. February 15, 2012, 05:50. Available at: http://www.acronymgeek.com/SOOU. Accessed February 15, 2012, 05:50. |