| APA | HBA2. (2012, February 11). In Acronym Geek. Retrieved 19:51, February 11, 2012, from http://www.acronymgeek.com/HBA2 |
| MLA | "HBA2." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/HBA2>. |
| MHRA | 'HBA2', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/HBA2> [accessed 11 February 2012] |
| Chicago | "HBA2", http://www.acronymgeek.com/HBA2 (accessed February 11, 2012). |
| CBE/CSE | HBA2 [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/HBA2. |
| Bluebook | HBA2, http://www.acronymgeek.com/HBA2 (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HBA2, http://www.acronymgeek.com/HBA2 (optional description here) (as of Feb. 11, 2012, 19:51). |
| AMA | HBA2. Acronym Geek. February 11, 2012, 19:51. Available at: http://www.acronymgeek.com/HBA2. Accessed February 11, 2012, 19:51. |