| APA | STTO. (2012, February 16). In Acronym Geek. Retrieved 22:34, February 16, 2012, from http://www.acronymgeek.com/STTO |
| MLA | "STTO." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/STTO>. |
| MHRA | 'STTO', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/STTO> [accessed 16 February 2012] |
| Chicago | "STTO", http://www.acronymgeek.com/STTO (accessed February 16, 2012). |
| CBE/CSE | STTO [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/STTO. |
| Bluebook | STTO, http://www.acronymgeek.com/STTO (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, STTO, http://www.acronymgeek.com/STTO (optional description here) (as of Feb. 16, 2012, 22:34). |
| AMA | STTO. Acronym Geek. February 16, 2012, 22:34. Available at: http://www.acronymgeek.com/STTO. Accessed February 16, 2012, 22:34. |