| APA | HAAU. (2012, February 14). In Acronym Geek. Retrieved 20:20, February 14, 2012, from http://www.acronymgeek.com/HAAU |
| MLA | "HAAU." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/HAAU>. |
| MHRA | 'HAAU', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/HAAU> [accessed 14 February 2012] |
| Chicago | "HAAU", http://www.acronymgeek.com/HAAU (accessed February 14, 2012). |
| CBE/CSE | HAAU [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/HAAU. |
| Bluebook | HAAU, http://www.acronymgeek.com/HAAU (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HAAU, http://www.acronymgeek.com/HAAU (optional description here) (as of Feb. 14, 2012, 20:20). |
| AMA | HAAU. Acronym Geek. February 14, 2012, 20:20. Available at: http://www.acronymgeek.com/HAAU. Accessed February 14, 2012, 20:20. |