| APA | HGRN. (2012, February 16). In Acronym Geek. Retrieved 08:36, February 16, 2012, from http://www.acronymgeek.com/HGRN |
| MLA | "HGRN." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/HGRN>. |
| MHRA | 'HGRN', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/HGRN> [accessed 16 February 2012] |
| Chicago | "HGRN", http://www.acronymgeek.com/HGRN (accessed February 16, 2012). |
| CBE/CSE | HGRN [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/HGRN. |
| Bluebook | HGRN, http://www.acronymgeek.com/HGRN (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HGRN, http://www.acronymgeek.com/HGRN (optional description here) (as of Feb. 16, 2012, 08:36). |
| AMA | HGRN. Acronym Geek. February 16, 2012, 08:36. Available at: http://www.acronymgeek.com/HGRN. Accessed February 16, 2012, 08:36. |