| APA | SPNS. (2012, February 16). In Acronym Geek. Retrieved 01:00, February 16, 2012, from http://www.acronymgeek.com/SPNS |
| MLA | "SPNS." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/SPNS>. |
| MHRA | 'SPNS', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/SPNS> [accessed 16 February 2012] |
| Chicago | "SPNS", http://www.acronymgeek.com/SPNS (accessed February 16, 2012). |
| CBE/CSE | SPNS [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/SPNS. |
| Bluebook | SPNS, http://www.acronymgeek.com/SPNS (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SPNS, http://www.acronymgeek.com/SPNS (optional description here) (as of Feb. 16, 2012, 01:00). |
| AMA | SPNS. Acronym Geek. February 16, 2012, 01:00. Available at: http://www.acronymgeek.com/SPNS. Accessed February 16, 2012, 01:00. |