| APA | DUN. (2012, February 14). In Acronym Geek. Retrieved 10:03, February 14, 2012, from http://www.acronymgeek.com/DUN |
| MLA | "DUN." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/DUN>. |
| MHRA | 'DUN', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/DUN> [accessed 14 February 2012] |
| Chicago | "DUN", http://www.acronymgeek.com/DUN (accessed February 14, 2012). |
| CBE/CSE | DUN [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/DUN. |
| Bluebook | DUN, http://www.acronymgeek.com/DUN (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, DUN, http://www.acronymgeek.com/DUN (optional description here) (as of Feb. 14, 2012, 10:03). |
| AMA | DUN. Acronym Geek. February 14, 2012, 10:03. Available at: http://www.acronymgeek.com/DUN. Accessed February 14, 2012, 10:03. |