| APA | HXD. (2012, February 13). In Acronym Geek. Retrieved 23:04, February 13, 2012, from http://www.acronymgeek.com/HXD |
| MLA | "HXD." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/HXD>. |
| MHRA | 'HXD', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/HXD> [accessed 13 February 2012] |
| Chicago | "HXD", http://www.acronymgeek.com/HXD (accessed February 13, 2012). |
| CBE/CSE | HXD [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/HXD. |
| Bluebook | HXD, http://www.acronymgeek.com/HXD (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HXD, http://www.acronymgeek.com/HXD (optional description here) (as of Feb. 13, 2012, 23:04). |
| AMA | HXD. Acronym Geek. February 13, 2012, 23:04. Available at: http://www.acronymgeek.com/HXD. Accessed February 13, 2012, 23:04. |