| APA | HBTL. (2012, February 16). In Acronym Geek. Retrieved 04:06, February 16, 2012, from http://www.acronymgeek.com/HBTL |
| MLA | "HBTL." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/HBTL>. |
| MHRA | 'HBTL', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/HBTL> [accessed 16 February 2012] |
| Chicago | "HBTL", http://www.acronymgeek.com/HBTL (accessed February 16, 2012). |
| CBE/CSE | HBTL [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/HBTL. |
| Bluebook | HBTL, http://www.acronymgeek.com/HBTL (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HBTL, http://www.acronymgeek.com/HBTL (optional description here) (as of Feb. 16, 2012, 04:06). |
| AMA | HBTL. Acronym Geek. February 16, 2012, 04:06. Available at: http://www.acronymgeek.com/HBTL. Accessed February 16, 2012, 04:06. |