| APA | S2A. (2012, February 13). In Acronym Geek. Retrieved 23:34, February 13, 2012, from http://www.acronymgeek.com/S2A |
| MLA | "S2A." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/S2A>. |
| MHRA | 'S2A', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/S2A> [accessed 13 February 2012] |
| Chicago | "S2A", http://www.acronymgeek.com/S2A (accessed February 13, 2012). |
| CBE/CSE | S2A [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/S2A. |
| Bluebook | S2A, http://www.acronymgeek.com/S2A (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, S2A, http://www.acronymgeek.com/S2A (optional description here) (as of Feb. 13, 2012, 23:34). |
| AMA | S2A. Acronym Geek. February 13, 2012, 23:34. Available at: http://www.acronymgeek.com/S2A. Accessed February 13, 2012, 23:34. |