| APA | 3HO. (2012, February 10). In Acronym Geek. Retrieved 17:01, February 10, 2012, from http://www.acronymgeek.com/3HO |
| MLA | "3HO." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/3HO>. |
| MHRA | '3HO', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/3HO> [accessed 10 February 2012] |
| Chicago | "3HO", http://www.acronymgeek.com/3HO (accessed February 10, 2012). |
| CBE/CSE | 3HO [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/3HO. |
| Bluebook | 3HO, http://www.acronymgeek.com/3HO (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, 3HO, http://www.acronymgeek.com/3HO (optional description here) (as of Feb. 10, 2012, 17:01). |
| AMA | 3HO. Acronym Geek. February 10, 2012, 17:01. Available at: http://www.acronymgeek.com/3HO. Accessed February 10, 2012, 17:01. |