| APA | IDUD. (2012, February 15). In Acronym Geek. Retrieved 14:14, February 15, 2012, from http://www.acronymgeek.com/IDUD |
| MLA | "IDUD." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/IDUD>. |
| MHRA | 'IDUD', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/IDUD> [accessed 15 February 2012] |
| Chicago | "IDUD", http://www.acronymgeek.com/IDUD (accessed February 15, 2012). |
| CBE/CSE | IDUD [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/IDUD. |
| Bluebook | IDUD, http://www.acronymgeek.com/IDUD (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, IDUD, http://www.acronymgeek.com/IDUD (optional description here) (as of Feb. 15, 2012, 14:14). |
| AMA | IDUD. Acronym Geek. February 15, 2012, 14:14. Available at: http://www.acronymgeek.com/IDUD. Accessed February 15, 2012, 14:14. |