| APA | HHGM. (2012, February 15). In Acronym Geek. Retrieved 07:28, February 15, 2012, from http://www.acronymgeek.com/HHGM |
| MLA | "HHGM." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HHGM>. |
| MHRA | 'HHGM', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HHGM> [accessed 15 February 2012] |
| Chicago | "HHGM", http://www.acronymgeek.com/HHGM (accessed February 15, 2012). |
| CBE/CSE | HHGM [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HHGM. |
| Bluebook | HHGM, http://www.acronymgeek.com/HHGM (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HHGM, http://www.acronymgeek.com/HHGM (optional description here) (as of Feb. 15, 2012, 07:28). |
| AMA | HHGM. Acronym Geek. February 15, 2012, 07:28. Available at: http://www.acronymgeek.com/HHGM. Accessed February 15, 2012, 07:28. |