| APA | OGS. (2012, February 14). In Acronym Geek. Retrieved 06:44, February 14, 2012, from http://www.acronymgeek.com/OGS |
| MLA | "OGS." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/OGS>. |
| MHRA | 'OGS', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/OGS> [accessed 14 February 2012] |
| Chicago | "OGS", http://www.acronymgeek.com/OGS (accessed February 14, 2012). |
| CBE/CSE | OGS [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/OGS. |
| Bluebook | OGS, http://www.acronymgeek.com/OGS (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OGS, http://www.acronymgeek.com/OGS (optional description here) (as of Feb. 14, 2012, 06:44). |
| AMA | OGS. Acronym Geek. February 14, 2012, 06:44. Available at: http://www.acronymgeek.com/OGS. Accessed February 14, 2012, 06:44. |