| APA | OMRO. (2012, February 17). In Acronym Geek. Retrieved 08:03, February 17, 2012, from http://www.acronymgeek.com/OMRO |
| MLA | "OMRO." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/OMRO>. |
| MHRA | 'OMRO', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/OMRO> [accessed 17 February 2012] |
| Chicago | "OMRO", http://www.acronymgeek.com/OMRO (accessed February 17, 2012). |
| CBE/CSE | OMRO [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/OMRO. |
| Bluebook | OMRO, http://www.acronymgeek.com/OMRO (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OMRO, http://www.acronymgeek.com/OMRO (optional description here) (as of Feb. 17, 2012, 08:03). |
| AMA | OMRO. Acronym Geek. February 17, 2012, 08:03. Available at: http://www.acronymgeek.com/OMRO. Accessed February 17, 2012, 08:03. |