| APA | OOE. (2012, February 14). In Acronym Geek. Retrieved 06:35, February 14, 2012, from http://www.acronymgeek.com/OOE |
| MLA | "OOE." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/OOE>. |
| MHRA | 'OOE', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/OOE> [accessed 14 February 2012] |
| Chicago | "OOE", http://www.acronymgeek.com/OOE (accessed February 14, 2012). |
| CBE/CSE | OOE [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/OOE. |
| Bluebook | OOE, http://www.acronymgeek.com/OOE (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OOE, http://www.acronymgeek.com/OOE (optional description here) (as of Feb. 14, 2012, 06:35). |
| AMA | OOE. Acronym Geek. February 14, 2012, 06:35. Available at: http://www.acronymgeek.com/OOE. Accessed February 14, 2012, 06:35. |