| APA | NTK. (2012, February 14). In Acronym Geek. Retrieved 10:21, February 14, 2012, from http://www.acronymgeek.com/NTK |
| MLA | "NTK." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/NTK>. |
| MHRA | 'NTK', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/NTK> [accessed 14 February 2012] |
| Chicago | "NTK", http://www.acronymgeek.com/NTK (accessed February 14, 2012). |
| CBE/CSE | NTK [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/NTK. |
| Bluebook | NTK, http://www.acronymgeek.com/NTK (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, NTK, http://www.acronymgeek.com/NTK (optional description here) (as of Feb. 14, 2012, 10:21). |
| AMA | NTK. Acronym Geek. February 14, 2012, 10:21. Available at: http://www.acronymgeek.com/NTK. Accessed February 14, 2012, 10:21. |