| APA | NDD. (2012, February 13). In Acronym Geek. Retrieved 22:42, February 13, 2012, from http://www.acronymgeek.com/NDD |
| MLA | "NDD." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/NDD>. |
| MHRA | 'NDD', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/NDD> [accessed 13 February 2012] |
| Chicago | "NDD", http://www.acronymgeek.com/NDD (accessed February 13, 2012). |
| CBE/CSE | NDD [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/NDD. |
| Bluebook | NDD, http://www.acronymgeek.com/NDD (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, NDD, http://www.acronymgeek.com/NDD (optional description here) (as of Feb. 13, 2012, 22:42). |
| AMA | NDD. Acronym Geek. February 13, 2012, 22:42. Available at: http://www.acronymgeek.com/NDD. Accessed February 13, 2012, 22:42. |