| APA | HBTR. (2012, February 15). In Acronym Geek. Retrieved 16:14, February 15, 2012, from http://www.acronymgeek.com/HBTR |
| MLA | "HBTR." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HBTR>. |
| MHRA | 'HBTR', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HBTR> [accessed 15 February 2012] |
| Chicago | "HBTR", http://www.acronymgeek.com/HBTR (accessed February 15, 2012). |
| CBE/CSE | HBTR [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HBTR. |
| Bluebook | HBTR, http://www.acronymgeek.com/HBTR (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HBTR, http://www.acronymgeek.com/HBTR (optional description here) (as of Feb. 15, 2012, 16:14). |
| AMA | HBTR. Acronym Geek. February 15, 2012, 16:14. Available at: http://www.acronymgeek.com/HBTR. Accessed February 15, 2012, 16:14. |