| APA | HTU. (2012, February 15). In Acronym Geek. Retrieved 03:27, February 15, 2012, from http://www.acronymgeek.com/HTU |
| MLA | "HTU." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HTU>. |
| MHRA | 'HTU', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HTU> [accessed 15 February 2012] |
| Chicago | "HTU", http://www.acronymgeek.com/HTU (accessed February 15, 2012). |
| CBE/CSE | HTU [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HTU. |
| Bluebook | HTU, http://www.acronymgeek.com/HTU (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HTU, http://www.acronymgeek.com/HTU (optional description here) (as of Feb. 15, 2012, 03:27). |
| AMA | HTU. Acronym Geek. February 15, 2012, 03:27. Available at: http://www.acronymgeek.com/HTU. Accessed February 15, 2012, 03:27. |