| APA | SDNS. (2012, February 10). In Acronym Geek. Retrieved 13:04, February 10, 2012, from http://www.acronymgeek.com/SDNS |
| MLA | "SDNS." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/SDNS>. |
| MHRA | 'SDNS', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/SDNS> [accessed 10 February 2012] |
| Chicago | "SDNS", http://www.acronymgeek.com/SDNS (accessed February 10, 2012). |
| CBE/CSE | SDNS [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/SDNS. |
| Bluebook | SDNS, http://www.acronymgeek.com/SDNS (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SDNS, http://www.acronymgeek.com/SDNS (optional description here) (as of Feb. 10, 2012, 13:04). |
| AMA | SDNS. Acronym Geek. February 10, 2012, 13:04. Available at: http://www.acronymgeek.com/SDNS. Accessed February 10, 2012, 13:04. |