| APA | HBUK. (2012, February 14). In Acronym Geek. Retrieved 21:04, February 14, 2012, from http://www.acronymgeek.com/HBUK |
| MLA | "HBUK." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/HBUK>. |
| MHRA | 'HBUK', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/HBUK> [accessed 14 February 2012] |
| Chicago | "HBUK", http://www.acronymgeek.com/HBUK (accessed February 14, 2012). |
| CBE/CSE | HBUK [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/HBUK. |
| Bluebook | HBUK, http://www.acronymgeek.com/HBUK (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HBUK, http://www.acronymgeek.com/HBUK (optional description here) (as of Feb. 14, 2012, 21:04). |
| AMA | HBUK. Acronym Geek. February 14, 2012, 21:04. Available at: http://www.acronymgeek.com/HBUK. Accessed February 14, 2012, 21:04. |