| APA | HBTK. (2012, February 15). In Acronym Geek. Retrieved 17:35, February 15, 2012, from http://www.acronymgeek.com/HBTK |
| MLA | "HBTK." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HBTK>. |
| MHRA | 'HBTK', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HBTK> [accessed 15 February 2012] |
| Chicago | "HBTK", http://www.acronymgeek.com/HBTK (accessed February 15, 2012). |
| CBE/CSE | HBTK [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HBTK. |
| Bluebook | HBTK, http://www.acronymgeek.com/HBTK (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HBTK, http://www.acronymgeek.com/HBTK (optional description here) (as of Feb. 15, 2012, 17:35). |
| AMA | HBTK. Acronym Geek. February 15, 2012, 17:35. Available at: http://www.acronymgeek.com/HBTK. Accessed February 15, 2012, 17:35. |