| APA | PDES. (2012, February 16). In Acronym Geek. Retrieved 06:10, February 16, 2012, from http://www.acronymgeek.com/PDES |
| MLA | "PDES." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/PDES>. |
| MHRA | 'PDES', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/PDES> [accessed 16 February 2012] |
| Chicago | "PDES", http://www.acronymgeek.com/PDES (accessed February 16, 2012). |
| CBE/CSE | PDES [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/PDES. |
| Bluebook | PDES, http://www.acronymgeek.com/PDES (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PDES, http://www.acronymgeek.com/PDES (optional description here) (as of Feb. 16, 2012, 06:10). |
| AMA | PDES. Acronym Geek. February 16, 2012, 06:10. Available at: http://www.acronymgeek.com/PDES. Accessed February 16, 2012, 06:10. |