| APA | PDER. (2012, February 15). In Acronym Geek. Retrieved 05:14, February 15, 2012, from http://www.acronymgeek.com/PDER |
| MLA | "PDER." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/PDER>. |
| MHRA | 'PDER', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/PDER> [accessed 15 February 2012] |
| Chicago | "PDER", http://www.acronymgeek.com/PDER (accessed February 15, 2012). |
| CBE/CSE | PDER [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/PDER. |
| Bluebook | PDER, http://www.acronymgeek.com/PDER (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PDER, http://www.acronymgeek.com/PDER (optional description here) (as of Feb. 15, 2012, 05:14). |
| AMA | PDER. Acronym Geek. February 15, 2012, 05:14. Available at: http://www.acronymgeek.com/PDER. Accessed February 15, 2012, 05:14. |