| APA | UBDN. (2012, February 16). In Acronym Geek. Retrieved 23:52, February 16, 2012, from http://www.acronymgeek.com/UBDN |
| MLA | "UBDN." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/UBDN>. |
| MHRA | 'UBDN', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/UBDN> [accessed 16 February 2012] |
| Chicago | "UBDN", http://www.acronymgeek.com/UBDN (accessed February 16, 2012). |
| CBE/CSE | UBDN [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/UBDN. |
| Bluebook | UBDN, http://www.acronymgeek.com/UBDN (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, UBDN, http://www.acronymgeek.com/UBDN (optional description here) (as of Feb. 16, 2012, 23:52). |
| AMA | UBDN. Acronym Geek. February 16, 2012, 23:52. Available at: http://www.acronymgeek.com/UBDN. Accessed February 16, 2012, 23:52. |