| APA | STEO. (2012, February 15). In Acronym Geek. Retrieved 07:26, February 15, 2012, from http://www.acronymgeek.com/STEO |
| MLA | "STEO." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/STEO>. |
| MHRA | 'STEO', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/STEO> [accessed 15 February 2012] |
| Chicago | "STEO", http://www.acronymgeek.com/STEO (accessed February 15, 2012). |
| CBE/CSE | STEO [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/STEO. |
| Bluebook | STEO, http://www.acronymgeek.com/STEO (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, STEO, http://www.acronymgeek.com/STEO (optional description here) (as of Feb. 15, 2012, 07:26). |
| AMA | STEO. Acronym Geek. February 15, 2012, 07:26. Available at: http://www.acronymgeek.com/STEO. Accessed February 15, 2012, 07:26. |