| APA | HKYY. (2012, February 14). In Acronym Geek. Retrieved 17:57, February 14, 2012, from http://www.acronymgeek.com/HKYY |
| MLA | "HKYY." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/HKYY>. |
| MHRA | 'HKYY', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/HKYY> [accessed 14 February 2012] |
| Chicago | "HKYY", http://www.acronymgeek.com/HKYY (accessed February 14, 2012). |
| CBE/CSE | HKYY [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/HKYY. |
| Bluebook | HKYY, http://www.acronymgeek.com/HKYY (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HKYY, http://www.acronymgeek.com/HKYY (optional description here) (as of Feb. 14, 2012, 17:57). |
| AMA | HKYY. Acronym Geek. February 14, 2012, 17:57. Available at: http://www.acronymgeek.com/HKYY. Accessed February 14, 2012, 17:57. |