| APA | OMRN. (2012, February 17). In Acronym Geek. Retrieved 02:11, February 17, 2012, from http://www.acronymgeek.com/OMRN |
| MLA | "OMRN." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/OMRN>. |
| MHRA | 'OMRN', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/OMRN> [accessed 17 February 2012] |
| Chicago | "OMRN", http://www.acronymgeek.com/OMRN (accessed February 17, 2012). |
| CBE/CSE | OMRN [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/OMRN. |
| Bluebook | OMRN, http://www.acronymgeek.com/OMRN (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OMRN, http://www.acronymgeek.com/OMRN (optional description here) (as of Feb. 17, 2012, 02:11). |
| AMA | OMRN. Acronym Geek. February 17, 2012, 02:11. Available at: http://www.acronymgeek.com/OMRN. Accessed February 17, 2012, 02:11. |