| APA | HBA. (2012, February 9). In Acronym Geek. Retrieved 03:32, February 9, 2012, from http://www.acronymgeek.com/HBA |
| MLA | "HBA." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/HBA>. |
| MHRA | 'HBA', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/HBA> [accessed 9 February 2012] |
| Chicago | "HBA", http://www.acronymgeek.com/HBA (accessed February 9, 2012). |
| CBE/CSE | HBA [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/HBA. |
| Bluebook | HBA, http://www.acronymgeek.com/HBA (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HBA, http://www.acronymgeek.com/HBA (optional description here) (as of Feb. 9, 2012, 03:32). |
| AMA | HBA. Acronym Geek. February 9, 2012, 03:32. Available at: http://www.acronymgeek.com/HBA. Accessed February 9, 2012, 03:32. |