| APA | OOPM. (2012, February 15). In Acronym Geek. Retrieved 05:23, February 15, 2012, from http://www.acronymgeek.com/OOPM |
| MLA | "OOPM." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/OOPM>. |
| MHRA | 'OOPM', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/OOPM> [accessed 15 February 2012] |
| Chicago | "OOPM", http://www.acronymgeek.com/OOPM (accessed February 15, 2012). |
| CBE/CSE | OOPM [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/OOPM. |
| Bluebook | OOPM, http://www.acronymgeek.com/OOPM (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OOPM, http://www.acronymgeek.com/OOPM (optional description here) (as of Feb. 15, 2012, 05:23). |
| AMA | OOPM. Acronym Geek. February 15, 2012, 05:23. Available at: http://www.acronymgeek.com/OOPM. Accessed February 15, 2012, 05:23. |