| APA | XTK. (2012, February 14). In Acronym Geek. Retrieved 02:04, February 14, 2012, from http://www.acronymgeek.com/XTK |
| MLA | "XTK." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/XTK>. |
| MHRA | 'XTK', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/XTK> [accessed 14 February 2012] |
| Chicago | "XTK", http://www.acronymgeek.com/XTK (accessed February 14, 2012). |
| CBE/CSE | XTK [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/XTK. |
| Bluebook | XTK, http://www.acronymgeek.com/XTK (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, XTK, http://www.acronymgeek.com/XTK (optional description here) (as of Feb. 14, 2012, 02:04). |
| AMA | XTK. Acronym Geek. February 14, 2012, 02:04. Available at: http://www.acronymgeek.com/XTK. Accessed February 14, 2012, 02:04. |