| APA | SOS. (2012, February 15). In Acronym Geek. Retrieved 03:28, February 15, 2012, from http://www.acronymgeek.com/SOS |
| MLA | "SOS." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/SOS>. |
| MHRA | 'SOS', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/SOS> [accessed 15 February 2012] |
| Chicago | "SOS", http://www.acronymgeek.com/SOS (accessed February 15, 2012). |
| CBE/CSE | SOS [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/SOS. |
| Bluebook | SOS, http://www.acronymgeek.com/SOS (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SOS, http://www.acronymgeek.com/SOS (optional description here) (as of Feb. 15, 2012, 03:28). |
| AMA | SOS. Acronym Geek. February 15, 2012, 03:28. Available at: http://www.acronymgeek.com/SOS. Accessed February 15, 2012, 03:28. |