| APA | OOH. (2012, February 13). In Acronym Geek. Retrieved 23:57, February 13, 2012, from http://www.acronymgeek.com/OOH |
| MLA | "OOH." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/OOH>. |
| MHRA | 'OOH', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/OOH> [accessed 13 February 2012] |
| Chicago | "OOH", http://www.acronymgeek.com/OOH (accessed February 13, 2012). |
| CBE/CSE | OOH [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/OOH. |
| Bluebook | OOH, http://www.acronymgeek.com/OOH (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OOH, http://www.acronymgeek.com/OOH (optional description here) (as of Feb. 13, 2012, 23:57). |
| AMA | OOH. Acronym Geek. February 13, 2012, 23:57. Available at: http://www.acronymgeek.com/OOH. Accessed February 13, 2012, 23:57. |