| APA | NDDK. (2012, February 16). In Acronym Geek. Retrieved 22:11, February 16, 2012, from http://www.acronymgeek.com/NDDK |
| MLA | "NDDK." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/NDDK>. |
| MHRA | 'NDDK', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/NDDK> [accessed 16 February 2012] |
| Chicago | "NDDK", http://www.acronymgeek.com/NDDK (accessed February 16, 2012). |
| CBE/CSE | NDDK [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/NDDK. |
| Bluebook | NDDK, http://www.acronymgeek.com/NDDK (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, NDDK, http://www.acronymgeek.com/NDDK (optional description here) (as of Feb. 16, 2012, 22:11). |
| AMA | NDDK. Acronym Geek. February 16, 2012, 22:11. Available at: http://www.acronymgeek.com/NDDK. Accessed February 16, 2012, 22:11. |