| APA | HHGF. (2012, February 11). In Acronym Geek. Retrieved 19:52, February 11, 2012, from http://www.acronymgeek.com/HHGF |
| MLA | "HHGF." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/HHGF>. |
| MHRA | 'HHGF', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/HHGF> [accessed 11 February 2012] |
| Chicago | "HHGF", http://www.acronymgeek.com/HHGF (accessed February 11, 2012). |
| CBE/CSE | HHGF [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/HHGF. |
| Bluebook | HHGF, http://www.acronymgeek.com/HHGF (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HHGF, http://www.acronymgeek.com/HHGF (optional description here) (as of Feb. 11, 2012, 19:52). |
| AMA | HHGF. Acronym Geek. February 11, 2012, 19:52. Available at: http://www.acronymgeek.com/HHGF. Accessed February 11, 2012, 19:52. |