| APA | SGS. (2012, February 14). In Acronym Geek. Retrieved 19:15, February 14, 2012, from http://www.acronymgeek.com/SGS |
| MLA | "SGS." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/SGS>. |
| MHRA | 'SGS', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/SGS> [accessed 14 February 2012] |
| Chicago | "SGS", http://www.acronymgeek.com/SGS (accessed February 14, 2012). |
| CBE/CSE | SGS [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/SGS. |
| Bluebook | SGS, http://www.acronymgeek.com/SGS (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SGS, http://www.acronymgeek.com/SGS (optional description here) (as of Feb. 14, 2012, 19:15). |
| AMA | SGS. Acronym Geek. February 14, 2012, 19:15. Available at: http://www.acronymgeek.com/SGS. Accessed February 14, 2012, 19:15. |