| APA | HABO. (2012, February 11). In Acronym Geek. Retrieved 21:26, February 11, 2012, from http://www.acronymgeek.com/HABO |
| MLA | "HABO." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/HABO>. |
| MHRA | 'HABO', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/HABO> [accessed 11 February 2012] |
| Chicago | "HABO", http://www.acronymgeek.com/HABO (accessed February 11, 2012). |
| CBE/CSE | HABO [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/HABO. |
| Bluebook | HABO, http://www.acronymgeek.com/HABO (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HABO, http://www.acronymgeek.com/HABO (optional description here) (as of Feb. 11, 2012, 21:26). |
| AMA | HABO. Acronym Geek. February 11, 2012, 21:26. Available at: http://www.acronymgeek.com/HABO. Accessed February 11, 2012, 21:26. |