| APA | S2RI. (2012, February 16). In Acronym Geek. Retrieved 09:43, February 16, 2012, from http://www.acronymgeek.com/S2RI |
| MLA | "S2RI." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/S2RI>. |
| MHRA | 'S2RI', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/S2RI> [accessed 16 February 2012] |
| Chicago | "S2RI", http://www.acronymgeek.com/S2RI (accessed February 16, 2012). |
| CBE/CSE | S2RI [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/S2RI. |
| Bluebook | S2RI, http://www.acronymgeek.com/S2RI (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, S2RI, http://www.acronymgeek.com/S2RI (optional description here) (as of Feb. 16, 2012, 09:43). |
| AMA | S2RI. Acronym Geek. February 16, 2012, 09:43. Available at: http://www.acronymgeek.com/S2RI. Accessed February 16, 2012, 09:43. |