| APA | HSYR. (2012, February 16). In Acronym Geek. Retrieved 07:06, February 16, 2012, from http://www.acronymgeek.com/HSYR |
| MLA | "HSYR." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/HSYR>. |
| MHRA | 'HSYR', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/HSYR> [accessed 16 February 2012] |
| Chicago | "HSYR", http://www.acronymgeek.com/HSYR (accessed February 16, 2012). |
| CBE/CSE | HSYR [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/HSYR. |
| Bluebook | HSYR, http://www.acronymgeek.com/HSYR (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HSYR, http://www.acronymgeek.com/HSYR (optional description here) (as of Feb. 16, 2012, 07:06). |
| AMA | HSYR. Acronym Geek. February 16, 2012, 07:06. Available at: http://www.acronymgeek.com/HSYR. Accessed February 16, 2012, 07:06. |