| APA | OREG. (2012, February 16). In Acronym Geek. Retrieved 04:48, February 16, 2012, from http://www.acronymgeek.com/OREG |
| MLA | "OREG." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/OREG>. |
| MHRA | 'OREG', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/OREG> [accessed 16 February 2012] |
| Chicago | "OREG", http://www.acronymgeek.com/OREG (accessed February 16, 2012). |
| CBE/CSE | OREG [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/OREG. |
| Bluebook | OREG, http://www.acronymgeek.com/OREG (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OREG, http://www.acronymgeek.com/OREG (optional description here) (as of Feb. 16, 2012, 04:48). |
| AMA | OREG. Acronym Geek. February 16, 2012, 04:48. Available at: http://www.acronymgeek.com/OREG. Accessed February 16, 2012, 04:48. |