| APA | PND. (2012, February 10). In Acronym Geek. Retrieved 10:54, February 10, 2012, from http://www.acronymgeek.com/PND |
| MLA | "PND." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/PND>. |
| MHRA | 'PND', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/PND> [accessed 10 February 2012] |
| Chicago | "PND", http://www.acronymgeek.com/PND (accessed February 10, 2012). |
| CBE/CSE | PND [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/PND. |
| Bluebook | PND, http://www.acronymgeek.com/PND (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PND, http://www.acronymgeek.com/PND (optional description here) (as of Feb. 10, 2012, 10:54). |
| AMA | PND. Acronym Geek. February 10, 2012, 10:54. Available at: http://www.acronymgeek.com/PND. Accessed February 10, 2012, 10:54. |