| APA | HGRD. (2012, February 15). In Acronym Geek. Retrieved 20:13, February 15, 2012, from http://www.acronymgeek.com/HGRD |
| MLA | "HGRD." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HGRD>. |
| MHRA | 'HGRD', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HGRD> [accessed 15 February 2012] |
| Chicago | "HGRD", http://www.acronymgeek.com/HGRD (accessed February 15, 2012). |
| CBE/CSE | HGRD [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HGRD. |
| Bluebook | HGRD, http://www.acronymgeek.com/HGRD (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HGRD, http://www.acronymgeek.com/HGRD (optional description here) (as of Feb. 15, 2012, 20:13). |
| AMA | HGRD. Acronym Geek. February 15, 2012, 20:13. Available at: http://www.acronymgeek.com/HGRD. Accessed February 15, 2012, 20:13. |