| APA | ZJO. (2012, February 13). In Acronym Geek. Retrieved 23:34, February 13, 2012, from http://www.acronymgeek.com/ZJO |
| MLA | "ZJO." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/ZJO>. |
| MHRA | 'ZJO', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/ZJO> [accessed 13 February 2012] |
| Chicago | "ZJO", http://www.acronymgeek.com/ZJO (accessed February 13, 2012). |
| CBE/CSE | ZJO [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/ZJO. |
| Bluebook | ZJO, http://www.acronymgeek.com/ZJO (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ZJO, http://www.acronymgeek.com/ZJO (optional description here) (as of Feb. 13, 2012, 23:34). |
| AMA | ZJO. Acronym Geek. February 13, 2012, 23:34. Available at: http://www.acronymgeek.com/ZJO. Accessed February 13, 2012, 23:34. |