| APA | WO. (2012, February 9). In Acronym Geek. Retrieved 17:50, February 9, 2012, from http://www.acronymgeek.com/WO |
| MLA | "WO." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/WO>. |
| MHRA | 'WO', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/WO> [accessed 9 February 2012] |
| Chicago | "WO", http://www.acronymgeek.com/WO (accessed February 9, 2012). |
| CBE/CSE | WO [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/WO. |
| Bluebook | WO, http://www.acronymgeek.com/WO (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, WO, http://www.acronymgeek.com/WO (optional description here) (as of Feb. 9, 2012, 17:50). |
| AMA | WO. Acronym Geek. February 9, 2012, 17:50. Available at: http://www.acronymgeek.com/WO. Accessed February 9, 2012, 17:50. |