| APA | GGS. (2012, February 9). In Acronym Geek. Retrieved 19:42, February 9, 2012, from http://www.acronymgeek.com/GGS |
| MLA | "GGS." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/GGS>. |
| MHRA | 'GGS', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/GGS> [accessed 9 February 2012] |
| Chicago | "GGS", http://www.acronymgeek.com/GGS (accessed February 9, 2012). |
| CBE/CSE | GGS [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/GGS. |
| Bluebook | GGS, http://www.acronymgeek.com/GGS (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GGS, http://www.acronymgeek.com/GGS (optional description here) (as of Feb. 9, 2012, 19:42). |
| AMA | GGS. Acronym Geek. February 9, 2012, 19:42. Available at: http://www.acronymgeek.com/GGS. Accessed February 9, 2012, 19:42. |