| APA | NNND. (2012, February 15). In Acronym Geek. Retrieved 21:35, February 15, 2012, from http://www.acronymgeek.com/NNND |
| MLA | "NNND." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/NNND>. |
| MHRA | 'NNND', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/NNND> [accessed 15 February 2012] |
| Chicago | "NNND", http://www.acronymgeek.com/NNND (accessed February 15, 2012). |
| CBE/CSE | NNND [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/NNND. |
| Bluebook | NNND, http://www.acronymgeek.com/NNND (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, NNND, http://www.acronymgeek.com/NNND (optional description here) (as of Feb. 15, 2012, 21:35). |
| AMA | NNND. Acronym Geek. February 15, 2012, 21:35. Available at: http://www.acronymgeek.com/NNND. Accessed February 15, 2012, 21:35. |