| APA | UDRN. (2012, February 15). In Acronym Geek. Retrieved 05:27, February 15, 2012, from http://www.acronymgeek.com/UDRN |
| MLA | "UDRN." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/UDRN>. |
| MHRA | 'UDRN', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/UDRN> [accessed 15 February 2012] |
| Chicago | "UDRN", http://www.acronymgeek.com/UDRN (accessed February 15, 2012). |
| CBE/CSE | UDRN [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/UDRN. |
| Bluebook | UDRN, http://www.acronymgeek.com/UDRN (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, UDRN, http://www.acronymgeek.com/UDRN (optional description here) (as of Feb. 15, 2012, 05:27). |
| AMA | UDRN. Acronym Geek. February 15, 2012, 05:27. Available at: http://www.acronymgeek.com/UDRN. Accessed February 15, 2012, 05:27. |