| APA | DUUK. (2012, February 15). In Acronym Geek. Retrieved 20:57, February 15, 2012, from http://www.acronymgeek.com/DUUK |
| MLA | "DUUK." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/DUUK>. |
| MHRA | 'DUUK', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/DUUK> [accessed 15 February 2012] |
| Chicago | "DUUK", http://www.acronymgeek.com/DUUK (accessed February 15, 2012). |
| CBE/CSE | DUUK [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/DUUK. |
| Bluebook | DUUK, http://www.acronymgeek.com/DUUK (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, DUUK, http://www.acronymgeek.com/DUUK (optional description here) (as of Feb. 15, 2012, 20:57). |
| AMA | DUUK. Acronym Geek. February 15, 2012, 20:57. Available at: http://www.acronymgeek.com/DUUK. Accessed February 15, 2012, 20:57. |