| APA | DUUF. (2012, February 16). In Acronym Geek. Retrieved 22:59, February 16, 2012, from http://www.acronymgeek.com/DUUF |
| MLA | "DUUF." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/DUUF>. |
| MHRA | 'DUUF', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/DUUF> [accessed 16 February 2012] |
| Chicago | "DUUF", http://www.acronymgeek.com/DUUF (accessed February 16, 2012). |
| CBE/CSE | DUUF [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/DUUF. |
| Bluebook | DUUF, http://www.acronymgeek.com/DUUF (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, DUUF, http://www.acronymgeek.com/DUUF (optional description here) (as of Feb. 16, 2012, 22:59). |
| AMA | DUUF. Acronym Geek. February 16, 2012, 22:59. Available at: http://www.acronymgeek.com/DUUF. Accessed February 16, 2012, 22:59. |