| APA | S2K. (2012, February 13). In Acronym Geek. Retrieved 22:35, February 13, 2012, from http://www.acronymgeek.com/S2K |
| MLA | "S2K." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/S2K>. |
| MHRA | 'S2K', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/S2K> [accessed 13 February 2012] |
| Chicago | "S2K", http://www.acronymgeek.com/S2K (accessed February 13, 2012). |
| CBE/CSE | S2K [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/S2K. |
| Bluebook | S2K, http://www.acronymgeek.com/S2K (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, S2K, http://www.acronymgeek.com/S2K (optional description here) (as of Feb. 13, 2012, 22:35). |
| AMA | S2K. Acronym Geek. February 13, 2012, 22:35. Available at: http://www.acronymgeek.com/S2K. Accessed February 13, 2012, 22:35. |