| APA | G.S.. (2012, February 14). In Acronym Geek. Retrieved 17:56, February 14, 2012, from http://www.acronymgeek.com/G.S. |
| MLA | "G.S.." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/G.S.>. |
| MHRA | 'G.S.', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/G.S.> [accessed 14 February 2012] |
| Chicago | "G.S.", http://www.acronymgeek.com/G.S. (accessed February 14, 2012). |
| CBE/CSE | G.S. [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/G.S.. |
| Bluebook | G.S., http://www.acronymgeek.com/G.S. (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, G.S., http://www.acronymgeek.com/G.S. (optional description here) (as of Feb. 14, 2012, 17:56). |
| AMA | G.S.. Acronym Geek. February 14, 2012, 17:56. Available at: http://www.acronymgeek.com/G.S.. Accessed February 14, 2012, 17:56. |