| APA | GHIS. (2012, February 16). In Acronym Geek. Retrieved 06:24, February 16, 2012, from http://www.acronymgeek.com/GHIS |
| MLA | "GHIS." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/GHIS>. |
| MHRA | 'GHIS', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/GHIS> [accessed 16 February 2012] |
| Chicago | "GHIS", http://www.acronymgeek.com/GHIS (accessed February 16, 2012). |
| CBE/CSE | GHIS [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/GHIS. |
| Bluebook | GHIS, http://www.acronymgeek.com/GHIS (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GHIS, http://www.acronymgeek.com/GHIS (optional description here) (as of Feb. 16, 2012, 06:24). |
| AMA | GHIS. Acronym Geek. February 16, 2012, 06:24. Available at: http://www.acronymgeek.com/GHIS. Accessed February 16, 2012, 06:24. |