| APA | OPMW. (2012, February 15). In Acronym Geek. Retrieved 19:34, February 15, 2012, from http://www.acronymgeek.com/OPMW |
| MLA | "OPMW." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/OPMW>. |
| MHRA | 'OPMW', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/OPMW> [accessed 15 February 2012] |
| Chicago | "OPMW", http://www.acronymgeek.com/OPMW (accessed February 15, 2012). |
| CBE/CSE | OPMW [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/OPMW. |
| Bluebook | OPMW, http://www.acronymgeek.com/OPMW (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OPMW, http://www.acronymgeek.com/OPMW (optional description here) (as of Feb. 15, 2012, 19:34). |
| AMA | OPMW. Acronym Geek. February 15, 2012, 19:34. Available at: http://www.acronymgeek.com/OPMW. Accessed February 15, 2012, 19:34. |