| APA | HRPU. (2012, February 15). In Acronym Geek. Retrieved 03:12, February 15, 2012, from http://www.acronymgeek.com/HRPU |
| MLA | "HRPU." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HRPU>. |
| MHRA | 'HRPU', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HRPU> [accessed 15 February 2012] |
| Chicago | "HRPU", http://www.acronymgeek.com/HRPU (accessed February 15, 2012). |
| CBE/CSE | HRPU [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HRPU. |
| Bluebook | HRPU, http://www.acronymgeek.com/HRPU (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HRPU, http://www.acronymgeek.com/HRPU (optional description here) (as of Feb. 15, 2012, 03:12). |
| AMA | HRPU. Acronym Geek. February 15, 2012, 03:12. Available at: http://www.acronymgeek.com/HRPU. Accessed February 15, 2012, 03:12. |