| APA | W/O. (2012, February 9). In Acronym Geek. Retrieved 21:37, February 9, 2012, from http://www.acronymgeek.com/W/O |
| MLA | "W/O." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/W/O>. |
| MHRA | 'W/O', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/W/O> [accessed 9 February 2012] |
| Chicago | "W/O", http://www.acronymgeek.com/W/O (accessed February 9, 2012). |
| CBE/CSE | W/O [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/W/O. |
| Bluebook | W/O, http://www.acronymgeek.com/W/O (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, W/O, http://www.acronymgeek.com/W/O (optional description here) (as of Feb. 9, 2012, 21:37). |
| AMA | W/O. Acronym Geek. February 9, 2012, 21:37. Available at: http://www.acronymgeek.com/W/O. Accessed February 9, 2012, 21:37. |