| APA | OEIA. (2012, February 14). In Acronym Geek. Retrieved 15:42, February 14, 2012, from http://www.acronymgeek.com/OEIA |
| MLA | "OEIA." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/OEIA>. |
| MHRA | 'OEIA', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/OEIA> [accessed 14 February 2012] |
| Chicago | "OEIA", http://www.acronymgeek.com/OEIA (accessed February 14, 2012). |
| CBE/CSE | OEIA [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/OEIA. |
| Bluebook | OEIA, http://www.acronymgeek.com/OEIA (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OEIA, http://www.acronymgeek.com/OEIA (optional description here) (as of Feb. 14, 2012, 15:42). |
| AMA | OEIA. Acronym Geek. February 14, 2012, 15:42. Available at: http://www.acronymgeek.com/OEIA. Accessed February 14, 2012, 15:42. |