| APA | O&M. (2012, February 9). In Acronym Geek. Retrieved 21:41, February 9, 2012, from http://www.acronymgeek.com/O&M |
| MLA | "O&M." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/O&M>. |
| MHRA | 'O&M', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/O&M> [accessed 9 February 2012] |
| Chicago | "O&M", http://www.acronymgeek.com/O&M (accessed February 9, 2012). |
| CBE/CSE | O&M [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/O&M. |
| Bluebook | O&M, http://www.acronymgeek.com/O&M (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, O&M, http://www.acronymgeek.com/O&M (optional description here) (as of Feb. 9, 2012, 21:41). |
| AMA | O&M. Acronym Geek. February 9, 2012, 21:41. Available at: http://www.acronymgeek.com/O&M. Accessed February 9, 2012, 21:41. |