| APA | HBPK. (2012, February 17). In Acronym Geek. Retrieved 00:21, February 17, 2012, from http://www.acronymgeek.com/HBPK |
| MLA | "HBPK." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/HBPK>. |
| MHRA | 'HBPK', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/HBPK> [accessed 17 February 2012] |
| Chicago | "HBPK", http://www.acronymgeek.com/HBPK (accessed February 17, 2012). |
| CBE/CSE | HBPK [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/HBPK. |
| Bluebook | HBPK, http://www.acronymgeek.com/HBPK (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HBPK, http://www.acronymgeek.com/HBPK (optional description here) (as of Feb. 17, 2012, 00:21). |
| AMA | HBPK. Acronym Geek. February 17, 2012, 00:21. Available at: http://www.acronymgeek.com/HBPK. Accessed February 17, 2012, 00:21. |