| APA | PNDE. (2012, February 15). In Acronym Geek. Retrieved 10:36, February 15, 2012, from http://www.acronymgeek.com/PNDE |
| MLA | "PNDE." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/PNDE>. |
| MHRA | 'PNDE', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/PNDE> [accessed 15 February 2012] |
| Chicago | "PNDE", http://www.acronymgeek.com/PNDE (accessed February 15, 2012). |
| CBE/CSE | PNDE [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/PNDE. |
| Bluebook | PNDE, http://www.acronymgeek.com/PNDE (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PNDE, http://www.acronymgeek.com/PNDE (optional description here) (as of Feb. 15, 2012, 10:36). |
| AMA | PNDE. Acronym Geek. February 15, 2012, 10:36. Available at: http://www.acronymgeek.com/PNDE. Accessed February 15, 2012, 10:36. |