| APA | OPWM. (2012, February 16). In Acronym Geek. Retrieved 22:56, February 16, 2012, from http://www.acronymgeek.com/OPWM |
| MLA | "OPWM." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/OPWM>. |
| MHRA | 'OPWM', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/OPWM> [accessed 16 February 2012] |
| Chicago | "OPWM", http://www.acronymgeek.com/OPWM (accessed February 16, 2012). |
| CBE/CSE | OPWM [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/OPWM. |
| Bluebook | OPWM, http://www.acronymgeek.com/OPWM (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OPWM, http://www.acronymgeek.com/OPWM (optional description here) (as of Feb. 16, 2012, 22:56). |
| AMA | OPWM. Acronym Geek. February 16, 2012, 22:56. Available at: http://www.acronymgeek.com/OPWM. Accessed February 16, 2012, 22:56. |