| APA | NDUA. (2012, February 17). In Acronym Geek. Retrieved 01:41, February 17, 2012, from http://www.acronymgeek.com/NDUA |
| MLA | "NDUA." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/NDUA>. |
| MHRA | 'NDUA', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/NDUA> [accessed 17 February 2012] |
| Chicago | "NDUA", http://www.acronymgeek.com/NDUA (accessed February 17, 2012). |
| CBE/CSE | NDUA [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/NDUA. |
| Bluebook | NDUA, http://www.acronymgeek.com/NDUA (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, NDUA, http://www.acronymgeek.com/NDUA (optional description here) (as of Feb. 17, 2012, 01:41). |
| AMA | NDUA. Acronym Geek. February 17, 2012, 01:41. Available at: http://www.acronymgeek.com/NDUA. Accessed February 17, 2012, 01:41. |