| APA | REOA. (2012, February 17). In Acronym Geek. Retrieved 01:59, February 17, 2012, from http://www.acronymgeek.com/REOA |
| MLA | "REOA." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/REOA>. |
| MHRA | 'REOA', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/REOA> [accessed 17 February 2012] |
| Chicago | "REOA", http://www.acronymgeek.com/REOA (accessed February 17, 2012). |
| CBE/CSE | REOA [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/REOA. |
| Bluebook | REOA, http://www.acronymgeek.com/REOA (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, REOA, http://www.acronymgeek.com/REOA (optional description here) (as of Feb. 17, 2012, 01:59). |
| AMA | REOA. Acronym Geek. February 17, 2012, 01:59. Available at: http://www.acronymgeek.com/REOA. Accessed February 17, 2012, 01:59. |