| APA | OZO. (2012, February 13). In Acronym Geek. Retrieved 21:34, February 13, 2012, from http://www.acronymgeek.com/OZO |
| MLA | "OZO." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/OZO>. |
| MHRA | 'OZO', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/OZO> [accessed 13 February 2012] |
| Chicago | "OZO", http://www.acronymgeek.com/OZO (accessed February 13, 2012). |
| CBE/CSE | OZO [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/OZO. |
| Bluebook | OZO, http://www.acronymgeek.com/OZO (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OZO, http://www.acronymgeek.com/OZO (optional description here) (as of Feb. 13, 2012, 21:34). |
| AMA | OZO. Acronym Geek. February 13, 2012, 21:34. Available at: http://www.acronymgeek.com/OZO. Accessed February 13, 2012, 21:34. |