| APA | HGRR. (2012, February 15). In Acronym Geek. Retrieved 23:09, February 15, 2012, from http://www.acronymgeek.com/HGRR |
| MLA | "HGRR." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HGRR>. |
| MHRA | 'HGRR', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HGRR> [accessed 15 February 2012] |
| Chicago | "HGRR", http://www.acronymgeek.com/HGRR (accessed February 15, 2012). |
| CBE/CSE | HGRR [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HGRR. |
| Bluebook | HGRR, http://www.acronymgeek.com/HGRR (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HGRR, http://www.acronymgeek.com/HGRR (optional description here) (as of Feb. 15, 2012, 23:09). |
| AMA | HGRR. Acronym Geek. February 15, 2012, 23:09. Available at: http://www.acronymgeek.com/HGRR. Accessed February 15, 2012, 23:09. |