| APA | HRR. (2012, February 13). In Acronym Geek. Retrieved 23:45, February 13, 2012, from http://www.acronymgeek.com/HRR |
| MLA | "HRR." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/HRR>. |
| MHRA | 'HRR', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/HRR> [accessed 13 February 2012] |
| Chicago | "HRR", http://www.acronymgeek.com/HRR (accessed February 13, 2012). |
| CBE/CSE | HRR [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/HRR. |
| Bluebook | HRR, http://www.acronymgeek.com/HRR (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HRR, http://www.acronymgeek.com/HRR (optional description here) (as of Feb. 13, 2012, 23:45). |
| AMA | HRR. Acronym Geek. February 13, 2012, 23:45. Available at: http://www.acronymgeek.com/HRR. Accessed February 13, 2012, 23:45. |