| APA | MW OP. (2012, February 12). In Acronym Geek. Retrieved 07:26, February 12, 2012, from http://www.acronymgeek.com/MW OP |
| MLA | "MW OP." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/MW OP>. |
| MHRA | 'MW OP', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/MW OP> [accessed 12 February 2012] |
| Chicago | "MW OP", http://www.acronymgeek.com/MW OP (accessed February 12, 2012). |
| CBE/CSE | MW OP [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/MW OP. |
| Bluebook | MW OP, http://www.acronymgeek.com/MW OP (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, MW OP, http://www.acronymgeek.com/MW OP (optional description here) (as of Feb. 12, 2012, 07:26). |
| AMA | MW OP. Acronym Geek. February 12, 2012, 07:26. Available at: http://www.acronymgeek.com/MW OP. Accessed February 12, 2012, 07:26. |