| APA | SK. (2012, February 14). In Acronym Geek. Retrieved 06:05, February 14, 2012, from http://www.acronymgeek.com/SK |
| MLA | "SK." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/SK>. |
| MHRA | 'SK', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/SK> [accessed 14 February 2012] |
| Chicago | "SK", http://www.acronymgeek.com/SK (accessed February 14, 2012). |
| CBE/CSE | SK [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/SK. |
| Bluebook | SK, http://www.acronymgeek.com/SK (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SK, http://www.acronymgeek.com/SK (optional description here) (as of Feb. 14, 2012, 06:05). |
| AMA | SK. Acronym Geek. February 14, 2012, 06:05. Available at: http://www.acronymgeek.com/SK. Accessed February 14, 2012, 06:05. |