| APA | NKK. (2012, February 14). In Acronym Geek. Retrieved 10:06, February 14, 2012, from http://www.acronymgeek.com/NKK |
| MLA | "NKK." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/NKK>. |
| MHRA | 'NKK', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/NKK> [accessed 14 February 2012] |
| Chicago | "NKK", http://www.acronymgeek.com/NKK (accessed February 14, 2012). |
| CBE/CSE | NKK [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/NKK. |
| Bluebook | NKK, http://www.acronymgeek.com/NKK (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, NKK, http://www.acronymgeek.com/NKK (optional description here) (as of Feb. 14, 2012, 10:06). |
| AMA | NKK. Acronym Geek. February 14, 2012, 10:06. Available at: http://www.acronymgeek.com/NKK. Accessed February 14, 2012, 10:06. |