| APA | KARL. (2012, February 12). In Acronym Geek. Retrieved 07:19, February 12, 2012, from http://www.acronymgeek.com/KARL |
| MLA | "KARL." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/KARL>. |
| MHRA | 'KARL', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/KARL> [accessed 12 February 2012] |
| Chicago | "KARL", http://www.acronymgeek.com/KARL (accessed February 12, 2012). |
| CBE/CSE | KARL [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/KARL. |
| Bluebook | KARL, http://www.acronymgeek.com/KARL (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, KARL, http://www.acronymgeek.com/KARL (optional description here) (as of Feb. 12, 2012, 07:19). |
| AMA | KARL. Acronym Geek. February 12, 2012, 07:19. Available at: http://www.acronymgeek.com/KARL. Accessed February 12, 2012, 07:19. |