| APA | GHM. (2012, February 13). In Acronym Geek. Retrieved 21:40, February 13, 2012, from http://www.acronymgeek.com/GHM |
| MLA | "GHM." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/GHM>. |
| MHRA | 'GHM', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/GHM> [accessed 13 February 2012] |
| Chicago | "GHM", http://www.acronymgeek.com/GHM (accessed February 13, 2012). |
| CBE/CSE | GHM [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/GHM. |
| Bluebook | GHM, http://www.acronymgeek.com/GHM (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GHM, http://www.acronymgeek.com/GHM (optional description here) (as of Feb. 13, 2012, 21:40). |
| AMA | GHM. Acronym Geek. February 13, 2012, 21:40. Available at: http://www.acronymgeek.com/GHM. Accessed February 13, 2012, 21:40. |