| APA | HB. (2012, February 9). In Acronym Geek. Retrieved 00:51, February 9, 2012, from http://www.acronymgeek.com/HB |
| MLA | "HB." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/HB>. |
| MHRA | 'HB', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/HB> [accessed 9 February 2012] |
| Chicago | "HB", http://www.acronymgeek.com/HB (accessed February 9, 2012). |
| CBE/CSE | HB [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/HB. |
| Bluebook | HB, http://www.acronymgeek.com/HB (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HB, http://www.acronymgeek.com/HB (optional description here) (as of Feb. 9, 2012, 00:51). |
| AMA | HB. Acronym Geek. February 9, 2012, 00:51. Available at: http://www.acronymgeek.com/HB. Accessed February 9, 2012, 00:51. |