| APA | HTLL. (2012, February 15). In Acronym Geek. Retrieved 13:26, February 15, 2012, from http://www.acronymgeek.com/HTLL |
| MLA | "HTLL." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HTLL>. |
| MHRA | 'HTLL', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HTLL> [accessed 15 February 2012] |
| Chicago | "HTLL", http://www.acronymgeek.com/HTLL (accessed February 15, 2012). |
| CBE/CSE | HTLL [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HTLL. |
| Bluebook | HTLL, http://www.acronymgeek.com/HTLL (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HTLL, http://www.acronymgeek.com/HTLL (optional description here) (as of Feb. 15, 2012, 13:26). |
| AMA | HTLL. Acronym Geek. February 15, 2012, 13:26. Available at: http://www.acronymgeek.com/HTLL. Accessed February 15, 2012, 13:26. |