| APA | HAU. (2012, February 15). In Acronym Geek. Retrieved 03:23, February 15, 2012, from http://www.acronymgeek.com/HAU |
| MLA | "HAU." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HAU>. |
| MHRA | 'HAU', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HAU> [accessed 15 February 2012] |
| Chicago | "HAU", http://www.acronymgeek.com/HAU (accessed February 15, 2012). |
| CBE/CSE | HAU [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HAU. |
| Bluebook | HAU, http://www.acronymgeek.com/HAU (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HAU, http://www.acronymgeek.com/HAU (optional description here) (as of Feb. 15, 2012, 03:23). |
| AMA | HAU. Acronym Geek. February 15, 2012, 03:23. Available at: http://www.acronymgeek.com/HAU. Accessed February 15, 2012, 03:23. |