| APA | UPUD. (2012, February 17). In Acronym Geek. Retrieved 02:41, February 17, 2012, from http://www.acronymgeek.com/UPUD |
| MLA | "UPUD." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/UPUD>. |
| MHRA | 'UPUD', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/UPUD> [accessed 17 February 2012] |
| Chicago | "UPUD", http://www.acronymgeek.com/UPUD (accessed February 17, 2012). |
| CBE/CSE | UPUD [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/UPUD. |
| Bluebook | UPUD, http://www.acronymgeek.com/UPUD (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, UPUD, http://www.acronymgeek.com/UPUD (optional description here) (as of Feb. 17, 2012, 02:41). |
| AMA | UPUD. Acronym Geek. February 17, 2012, 02:41. Available at: http://www.acronymgeek.com/UPUD. Accessed February 17, 2012, 02:41. |