| APA | HMK. (2012, February 14). In Acronym Geek. Retrieved 12:12, February 14, 2012, from http://www.acronymgeek.com/HMK |
| MLA | "HMK." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/HMK>. |
| MHRA | 'HMK', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/HMK> [accessed 14 February 2012] |
| Chicago | "HMK", http://www.acronymgeek.com/HMK (accessed February 14, 2012). |
| CBE/CSE | HMK [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/HMK. |
| Bluebook | HMK, http://www.acronymgeek.com/HMK (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HMK, http://www.acronymgeek.com/HMK (optional description here) (as of Feb. 14, 2012, 12:12). |
| AMA | HMK. Acronym Geek. February 14, 2012, 12:12. Available at: http://www.acronymgeek.com/HMK. Accessed February 14, 2012, 12:12. |