| APA | PNS. (2012, February 9). In Acronym Geek. Retrieved 21:00, February 9, 2012, from http://www.acronymgeek.com/PNS |
| MLA | "PNS." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/PNS>. |
| MHRA | 'PNS', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/PNS> [accessed 9 February 2012] |
| Chicago | "PNS", http://www.acronymgeek.com/PNS (accessed February 9, 2012). |
| CBE/CSE | PNS [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/PNS. |
| Bluebook | PNS, http://www.acronymgeek.com/PNS (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PNS, http://www.acronymgeek.com/PNS (optional description here) (as of Feb. 9, 2012, 21:00). |
| AMA | PNS. Acronym Geek. February 9, 2012, 21:00. Available at: http://www.acronymgeek.com/PNS. Accessed February 9, 2012, 21:00. |