| APA | HTRE. (2012, February 16). In Acronym Geek. Retrieved 23:54, February 16, 2012, from http://www.acronymgeek.com/HTRE |
| MLA | "HTRE." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/HTRE>. |
| MHRA | 'HTRE', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/HTRE> [accessed 16 February 2012] |
| Chicago | "HTRE", http://www.acronymgeek.com/HTRE (accessed February 16, 2012). |
| CBE/CSE | HTRE [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/HTRE. |
| Bluebook | HTRE, http://www.acronymgeek.com/HTRE (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HTRE, http://www.acronymgeek.com/HTRE (optional description here) (as of Feb. 16, 2012, 23:54). |
| AMA | HTRE. Acronym Geek. February 16, 2012, 23:54. Available at: http://www.acronymgeek.com/HTRE. Accessed February 16, 2012, 23:54. |