| APA | NPDS. (2012, February 16). In Acronym Geek. Retrieved 20:43, February 16, 2012, from http://www.acronymgeek.com/NPDS |
| MLA | "NPDS." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/NPDS>. |
| MHRA | 'NPDS', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/NPDS> [accessed 16 February 2012] |
| Chicago | "NPDS", http://www.acronymgeek.com/NPDS (accessed February 16, 2012). |
| CBE/CSE | NPDS [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/NPDS. |
| Bluebook | NPDS, http://www.acronymgeek.com/NPDS (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, NPDS, http://www.acronymgeek.com/NPDS (optional description here) (as of Feb. 16, 2012, 20:43). |
| AMA | NPDS. Acronym Geek. February 16, 2012, 20:43. Available at: http://www.acronymgeek.com/NPDS. Accessed February 16, 2012, 20:43. |