| APA | HRS. (2012, February 14). In Acronym Geek. Retrieved 20:35, February 14, 2012, from http://www.acronymgeek.com/HRS |
| MLA | "HRS." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/HRS>. |
| MHRA | 'HRS', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/HRS> [accessed 14 February 2012] |
| Chicago | "HRS", http://www.acronymgeek.com/HRS (accessed February 14, 2012). |
| CBE/CSE | HRS [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/HRS. |
| Bluebook | HRS, http://www.acronymgeek.com/HRS (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HRS, http://www.acronymgeek.com/HRS (optional description here) (as of Feb. 14, 2012, 20:35). |
| AMA | HRS. Acronym Geek. February 14, 2012, 20:35. Available at: http://www.acronymgeek.com/HRS. Accessed February 14, 2012, 20:35. |