| APA | HTRI. (2012, February 15). In Acronym Geek. Retrieved 13:52, February 15, 2012, from http://www.acronymgeek.com/HTRI |
| MLA | "HTRI." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HTRI>. |
| MHRA | 'HTRI', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HTRI> [accessed 15 February 2012] |
| Chicago | "HTRI", http://www.acronymgeek.com/HTRI (accessed February 15, 2012). |
| CBE/CSE | HTRI [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HTRI. |
| Bluebook | HTRI, http://www.acronymgeek.com/HTRI (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HTRI, http://www.acronymgeek.com/HTRI (optional description here) (as of Feb. 15, 2012, 13:52). |
| AMA | HTRI. Acronym Geek. February 15, 2012, 13:52. Available at: http://www.acronymgeek.com/HTRI. Accessed February 15, 2012, 13:52. |