| APA | HBFK. (2012, February 15). In Acronym Geek. Retrieved 17:30, February 15, 2012, from http://www.acronymgeek.com/HBFK |
| MLA | "HBFK." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HBFK>. |
| MHRA | 'HBFK', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HBFK> [accessed 15 February 2012] |
| Chicago | "HBFK", http://www.acronymgeek.com/HBFK (accessed February 15, 2012). |
| CBE/CSE | HBFK [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HBFK. |
| Bluebook | HBFK, http://www.acronymgeek.com/HBFK (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HBFK, http://www.acronymgeek.com/HBFK (optional description here) (as of Feb. 15, 2012, 17:30). |
| AMA | HBFK. Acronym Geek. February 15, 2012, 17:30. Available at: http://www.acronymgeek.com/HBFK. Accessed February 15, 2012, 17:30. |