| APA | HAT. (2012, February 9). In Acronym Geek. Retrieved 21:02, February 9, 2012, from http://www.acronymgeek.com/HAT |
| MLA | "HAT." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/HAT>. |
| MHRA | 'HAT', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/HAT> [accessed 9 February 2012] |
| Chicago | "HAT", http://www.acronymgeek.com/HAT (accessed February 9, 2012). |
| CBE/CSE | HAT [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/HAT. |
| Bluebook | HAT, http://www.acronymgeek.com/HAT (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HAT, http://www.acronymgeek.com/HAT (optional description here) (as of Feb. 9, 2012, 21:02). |
| AMA | HAT. Acronym Geek. February 9, 2012, 21:02. Available at: http://www.acronymgeek.com/HAT. Accessed February 9, 2012, 21:02. |