| APA | HTRN. (2012, February 15). In Acronym Geek. Retrieved 05:59, February 15, 2012, from http://www.acronymgeek.com/HTRN |
| MLA | "HTRN." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HTRN>. |
| MHRA | 'HTRN', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HTRN> [accessed 15 February 2012] |
| Chicago | "HTRN", http://www.acronymgeek.com/HTRN (accessed February 15, 2012). |
| CBE/CSE | HTRN [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HTRN. |
| Bluebook | HTRN, http://www.acronymgeek.com/HTRN (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HTRN, http://www.acronymgeek.com/HTRN (optional description here) (as of Feb. 15, 2012, 05:59). |
| AMA | HTRN. Acronym Geek. February 15, 2012, 05:59. Available at: http://www.acronymgeek.com/HTRN. Accessed February 15, 2012, 05:59. |