| APA | VPSN. (2012, February 15). In Acronym Geek. Retrieved 07:06, February 15, 2012, from http://www.acronymgeek.com/VPSN |
| MLA | "VPSN." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/VPSN>. |
| MHRA | 'VPSN', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/VPSN> [accessed 15 February 2012] |
| Chicago | "VPSN", http://www.acronymgeek.com/VPSN (accessed February 15, 2012). |
| CBE/CSE | VPSN [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/VPSN. |
| Bluebook | VPSN, http://www.acronymgeek.com/VPSN (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, VPSN, http://www.acronymgeek.com/VPSN (optional description here) (as of Feb. 15, 2012, 07:06). |
| AMA | VPSN. Acronym Geek. February 15, 2012, 07:06. Available at: http://www.acronymgeek.com/VPSN. Accessed February 15, 2012, 07:06. |