| APA | J4K. (2012, February 13). In Acronym Geek. Retrieved 23:36, February 13, 2012, from http://www.acronymgeek.com/J4K |
| MLA | "J4K." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/J4K>. |
| MHRA | 'J4K', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/J4K> [accessed 13 February 2012] |
| Chicago | "J4K", http://www.acronymgeek.com/J4K (accessed February 13, 2012). |
| CBE/CSE | J4K [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/J4K. |
| Bluebook | J4K, http://www.acronymgeek.com/J4K (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, J4K, http://www.acronymgeek.com/J4K (optional description here) (as of Feb. 13, 2012, 23:36). |
| AMA | J4K. Acronym Geek. February 13, 2012, 23:36. Available at: http://www.acronymgeek.com/J4K. Accessed February 13, 2012, 23:36. |