| APA | OFO. (2012, February 13). In Acronym Geek. Retrieved 21:30, February 13, 2012, from http://www.acronymgeek.com/OFO |
| MLA | "OFO." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/OFO>. |
| MHRA | 'OFO', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/OFO> [accessed 13 February 2012] |
| Chicago | "OFO", http://www.acronymgeek.com/OFO (accessed February 13, 2012). |
| CBE/CSE | OFO [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/OFO. |
| Bluebook | OFO, http://www.acronymgeek.com/OFO (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OFO, http://www.acronymgeek.com/OFO (optional description here) (as of Feb. 13, 2012, 21:30). |
| AMA | OFO. Acronym Geek. February 13, 2012, 21:30. Available at: http://www.acronymgeek.com/OFO. Accessed February 13, 2012, 21:30. |