| APA | HBUA. (2012, February 16). In Acronym Geek. Retrieved 18:06, February 16, 2012, from http://www.acronymgeek.com/HBUA |
| MLA | "HBUA." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/HBUA>. |
| MHRA | 'HBUA', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/HBUA> [accessed 16 February 2012] |
| Chicago | "HBUA", http://www.acronymgeek.com/HBUA (accessed February 16, 2012). |
| CBE/CSE | HBUA [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/HBUA. |
| Bluebook | HBUA, http://www.acronymgeek.com/HBUA (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HBUA, http://www.acronymgeek.com/HBUA (optional description here) (as of Feb. 16, 2012, 18:06). |
| AMA | HBUA. Acronym Geek. February 16, 2012, 18:06. Available at: http://www.acronymgeek.com/HBUA. Accessed February 16, 2012, 18:06. |