| APA | PDEM. (2012, February 15). In Acronym Geek. Retrieved 07:50, February 15, 2012, from http://www.acronymgeek.com/PDEM |
| MLA | "PDEM." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/PDEM>. |
| MHRA | 'PDEM', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/PDEM> [accessed 15 February 2012] |
| Chicago | "PDEM", http://www.acronymgeek.com/PDEM (accessed February 15, 2012). |
| CBE/CSE | PDEM [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/PDEM. |
| Bluebook | PDEM, http://www.acronymgeek.com/PDEM (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PDEM, http://www.acronymgeek.com/PDEM (optional description here) (as of Feb. 15, 2012, 07:50). |
| AMA | PDEM. Acronym Geek. February 15, 2012, 07:50. Available at: http://www.acronymgeek.com/PDEM. Accessed February 15, 2012, 07:50. |