| APA | OESG. (2012, February 15). In Acronym Geek. Retrieved 12:15, February 15, 2012, from http://www.acronymgeek.com/OESG |
| MLA | "OESG." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/OESG>. |
| MHRA | 'OESG', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/OESG> [accessed 15 February 2012] |
| Chicago | "OESG", http://www.acronymgeek.com/OESG (accessed February 15, 2012). |
| CBE/CSE | OESG [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/OESG. |
| Bluebook | OESG, http://www.acronymgeek.com/OESG (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OESG, http://www.acronymgeek.com/OESG (optional description here) (as of Feb. 15, 2012, 12:15). |
| AMA | OESG. Acronym Geek. February 15, 2012, 12:15. Available at: http://www.acronymgeek.com/OESG. Accessed February 15, 2012, 12:15. |