| APA | HGSK. (2012, February 15). In Acronym Geek. Retrieved 22:00, February 15, 2012, from http://www.acronymgeek.com/HGSK |
| MLA | "HGSK." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HGSK>. |
| MHRA | 'HGSK', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HGSK> [accessed 15 February 2012] |
| Chicago | "HGSK", http://www.acronymgeek.com/HGSK (accessed February 15, 2012). |
| CBE/CSE | HGSK [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HGSK. |
| Bluebook | HGSK, http://www.acronymgeek.com/HGSK (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HGSK, http://www.acronymgeek.com/HGSK (optional description here) (as of Feb. 15, 2012, 22:00). |
| AMA | HGSK. Acronym Geek. February 15, 2012, 22:00. Available at: http://www.acronymgeek.com/HGSK. Accessed February 15, 2012, 22:00. |