| APA | HTAA. (2012, February 14). In Acronym Geek. Retrieved 13:51, February 14, 2012, from http://www.acronymgeek.com/HTAA |
| MLA | "HTAA." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/HTAA>. |
| MHRA | 'HTAA', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/HTAA> [accessed 14 February 2012] |
| Chicago | "HTAA", http://www.acronymgeek.com/HTAA (accessed February 14, 2012). |
| CBE/CSE | HTAA [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/HTAA. |
| Bluebook | HTAA, http://www.acronymgeek.com/HTAA (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HTAA, http://www.acronymgeek.com/HTAA (optional description here) (as of Feb. 14, 2012, 13:51). |
| AMA | HTAA. Acronym Geek. February 14, 2012, 13:51. Available at: http://www.acronymgeek.com/HTAA. Accessed February 14, 2012, 13:51. |