| APA | HCKL. (2012, February 14). In Acronym Geek. Retrieved 18:39, February 14, 2012, from http://www.acronymgeek.com/HCKL |
| MLA | "HCKL." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/HCKL>. |
| MHRA | 'HCKL', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/HCKL> [accessed 14 February 2012] |
| Chicago | "HCKL", http://www.acronymgeek.com/HCKL (accessed February 14, 2012). |
| CBE/CSE | HCKL [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/HCKL. |
| Bluebook | HCKL, http://www.acronymgeek.com/HCKL (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HCKL, http://www.acronymgeek.com/HCKL (optional description here) (as of Feb. 14, 2012, 18:39). |
| AMA | HCKL. Acronym Geek. February 14, 2012, 18:39. Available at: http://www.acronymgeek.com/HCKL. Accessed February 14, 2012, 18:39. |