| APA | HXS. (2012, February 13). In Acronym Geek. Retrieved 22:50, February 13, 2012, from http://www.acronymgeek.com/HXS |
| MLA | "HXS." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/HXS>. |
| MHRA | 'HXS', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/HXS> [accessed 13 February 2012] |
| Chicago | "HXS", http://www.acronymgeek.com/HXS (accessed February 13, 2012). |
| CBE/CSE | HXS [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/HXS. |
| Bluebook | HXS, http://www.acronymgeek.com/HXS (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HXS, http://www.acronymgeek.com/HXS (optional description here) (as of Feb. 13, 2012, 22:50). |
| AMA | HXS. Acronym Geek. February 13, 2012, 22:50. Available at: http://www.acronymgeek.com/HXS. Accessed February 13, 2012, 22:50. |