| APA | PDEU. (2012, February 14). In Acronym Geek. Retrieved 20:24, February 14, 2012, from http://www.acronymgeek.com/PDEU |
| MLA | "PDEU." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/PDEU>. |
| MHRA | 'PDEU', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/PDEU> [accessed 14 February 2012] |
| Chicago | "PDEU", http://www.acronymgeek.com/PDEU (accessed February 14, 2012). |
| CBE/CSE | PDEU [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/PDEU. |
| Bluebook | PDEU, http://www.acronymgeek.com/PDEU (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PDEU, http://www.acronymgeek.com/PDEU (optional description here) (as of Feb. 14, 2012, 20:24). |
| AMA | PDEU. Acronym Geek. February 14, 2012, 20:24. Available at: http://www.acronymgeek.com/PDEU. Accessed February 14, 2012, 20:24. |