| APA | OHMA. (2012, February 16). In Acronym Geek. Retrieved 16:01, February 16, 2012, from http://www.acronymgeek.com/OHMA |
| MLA | "OHMA." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/OHMA>. |
| MHRA | 'OHMA', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/OHMA> [accessed 16 February 2012] |
| Chicago | "OHMA", http://www.acronymgeek.com/OHMA (accessed February 16, 2012). |
| CBE/CSE | OHMA [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/OHMA. |
| Bluebook | OHMA, http://www.acronymgeek.com/OHMA (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OHMA, http://www.acronymgeek.com/OHMA (optional description here) (as of Feb. 16, 2012, 16:01). |
| AMA | OHMA. Acronym Geek. February 16, 2012, 16:01. Available at: http://www.acronymgeek.com/OHMA. Accessed February 16, 2012, 16:01. |