| APA | HTAU. (2012, February 10). In Acronym Geek. Retrieved 12:50, February 10, 2012, from http://www.acronymgeek.com/HTAU |
| MLA | "HTAU." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/HTAU>. |
| MHRA | 'HTAU', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/HTAU> [accessed 10 February 2012] |
| Chicago | "HTAU", http://www.acronymgeek.com/HTAU (accessed February 10, 2012). |
| CBE/CSE | HTAU [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/HTAU. |
| Bluebook | HTAU, http://www.acronymgeek.com/HTAU (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HTAU, http://www.acronymgeek.com/HTAU (optional description here) (as of Feb. 10, 2012, 12:50). |
| AMA | HTAU. Acronym Geek. February 10, 2012, 12:50. Available at: http://www.acronymgeek.com/HTAU. Accessed February 10, 2012, 12:50. |