| APA | HMGC. (2012, February 15). In Acronym Geek. Retrieved 14:41, February 15, 2012, from http://www.acronymgeek.com/HMGC |
| MLA | "HMGC." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HMGC>. |
| MHRA | 'HMGC', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HMGC> [accessed 15 February 2012] |
| Chicago | "HMGC", http://www.acronymgeek.com/HMGC (accessed February 15, 2012). |
| CBE/CSE | HMGC [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HMGC. |
| Bluebook | HMGC, http://www.acronymgeek.com/HMGC (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HMGC, http://www.acronymgeek.com/HMGC (optional description here) (as of Feb. 15, 2012, 14:41). |
| AMA | HMGC. Acronym Geek. February 15, 2012, 14:41. Available at: http://www.acronymgeek.com/HMGC. Accessed February 15, 2012, 14:41. |