| APA | HRX. (2012, February 13). In Acronym Geek. Retrieved 20:51, February 13, 2012, from http://www.acronymgeek.com/HRX |
| MLA | "HRX." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/HRX>. |
| MHRA | 'HRX', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/HRX> [accessed 13 February 2012] |
| Chicago | "HRX", http://www.acronymgeek.com/HRX (accessed February 13, 2012). |
| CBE/CSE | HRX [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/HRX. |
| Bluebook | HRX, http://www.acronymgeek.com/HRX (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HRX, http://www.acronymgeek.com/HRX (optional description here) (as of Feb. 13, 2012, 20:51). |
| AMA | HRX. Acronym Geek. February 13, 2012, 20:51. Available at: http://www.acronymgeek.com/HRX. Accessed February 13, 2012, 20:51. |