| APA | HRU. (2012, February 14). In Acronym Geek. Retrieved 19:15, February 14, 2012, from http://www.acronymgeek.com/HRU |
| MLA | "HRU." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/HRU>. |
| MHRA | 'HRU', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/HRU> [accessed 14 February 2012] |
| Chicago | "HRU", http://www.acronymgeek.com/HRU (accessed February 14, 2012). |
| CBE/CSE | HRU [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/HRU. |
| Bluebook | HRU, http://www.acronymgeek.com/HRU (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HRU, http://www.acronymgeek.com/HRU (optional description here) (as of Feb. 14, 2012, 19:15). |
| AMA | HRU. Acronym Geek. February 14, 2012, 19:15. Available at: http://www.acronymgeek.com/HRU. Accessed February 14, 2012, 19:15. |