| APA | TKK. (2012, February 14). In Acronym Geek. Retrieved 10:22, February 14, 2012, from http://www.acronymgeek.com/TKK |
| MLA | "TKK." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/TKK>. |
| MHRA | 'TKK', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/TKK> [accessed 14 February 2012] |
| Chicago | "TKK", http://www.acronymgeek.com/TKK (accessed February 14, 2012). |
| CBE/CSE | TKK [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/TKK. |
| Bluebook | TKK, http://www.acronymgeek.com/TKK (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, TKK, http://www.acronymgeek.com/TKK (optional description here) (as of Feb. 14, 2012, 10:22). |
| AMA | TKK. Acronym Geek. February 14, 2012, 10:22. Available at: http://www.acronymgeek.com/TKK. Accessed February 14, 2012, 10:22. |