| APA | HGRU. (2012, February 15). In Acronym Geek. Retrieved 16:37, February 15, 2012, from http://www.acronymgeek.com/HGRU |
| MLA | "HGRU." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HGRU>. |
| MHRA | 'HGRU', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HGRU> [accessed 15 February 2012] |
| Chicago | "HGRU", http://www.acronymgeek.com/HGRU (accessed February 15, 2012). |
| CBE/CSE | HGRU [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HGRU. |
| Bluebook | HGRU, http://www.acronymgeek.com/HGRU (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HGRU, http://www.acronymgeek.com/HGRU (optional description here) (as of Feb. 15, 2012, 16:37). |
| AMA | HGRU. Acronym Geek. February 15, 2012, 16:37. Available at: http://www.acronymgeek.com/HGRU. Accessed February 15, 2012, 16:37. |