| APA | HSYL. (2012, February 16). In Acronym Geek. Retrieved 18:40, February 16, 2012, from http://www.acronymgeek.com/HSYL |
| MLA | "HSYL." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/HSYL>. |
| MHRA | 'HSYL', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/HSYL> [accessed 16 February 2012] |
| Chicago | "HSYL", http://www.acronymgeek.com/HSYL (accessed February 16, 2012). |
| CBE/CSE | HSYL [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/HSYL. |
| Bluebook | HSYL, http://www.acronymgeek.com/HSYL (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HSYL, http://www.acronymgeek.com/HSYL (optional description here) (as of Feb. 16, 2012, 18:40). |
| AMA | HSYL. Acronym Geek. February 16, 2012, 18:40. Available at: http://www.acronymgeek.com/HSYL. Accessed February 16, 2012, 18:40. |