| APA | HAA. (2012, February 13). In Acronym Geek. Retrieved 23:18, February 13, 2012, from http://www.acronymgeek.com/HAA |
| MLA | "HAA." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/HAA>. |
| MHRA | 'HAA', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/HAA> [accessed 13 February 2012] |
| Chicago | "HAA", http://www.acronymgeek.com/HAA (accessed February 13, 2012). |
| CBE/CSE | HAA [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/HAA. |
| Bluebook | HAA, http://www.acronymgeek.com/HAA (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HAA, http://www.acronymgeek.com/HAA (optional description here) (as of Feb. 13, 2012, 23:18). |
| AMA | HAA. Acronym Geek. February 13, 2012, 23:18. Available at: http://www.acronymgeek.com/HAA. Accessed February 13, 2012, 23:18. |