| APA | DUPN. (2012, February 15). In Acronym Geek. Retrieved 00:11, February 15, 2012, from http://www.acronymgeek.com/DUPN |
| MLA | "DUPN." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/DUPN>. |
| MHRA | 'DUPN', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/DUPN> [accessed 15 February 2012] |
| Chicago | "DUPN", http://www.acronymgeek.com/DUPN (accessed February 15, 2012). |
| CBE/CSE | DUPN [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/DUPN. |
| Bluebook | DUPN, http://www.acronymgeek.com/DUPN (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, DUPN, http://www.acronymgeek.com/DUPN (optional description here) (as of Feb. 15, 2012, 00:11). |
| AMA | DUPN. Acronym Geek. February 15, 2012, 00:11. Available at: http://www.acronymgeek.com/DUPN. Accessed February 15, 2012, 00:11. |