| APA | NIDU. (2012, February 14). In Acronym Geek. Retrieved 18:45, February 14, 2012, from http://www.acronymgeek.com/NIDU |
| MLA | "NIDU." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/NIDU>. |
| MHRA | 'NIDU', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/NIDU> [accessed 14 February 2012] |
| Chicago | "NIDU", http://www.acronymgeek.com/NIDU (accessed February 14, 2012). |
| CBE/CSE | NIDU [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/NIDU. |
| Bluebook | NIDU, http://www.acronymgeek.com/NIDU (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, NIDU, http://www.acronymgeek.com/NIDU (optional description here) (as of Feb. 14, 2012, 18:45). |
| AMA | NIDU. Acronym Geek. February 14, 2012, 18:45. Available at: http://www.acronymgeek.com/NIDU. Accessed February 14, 2012, 18:45. |