| APA | HPBG. (2012, February 15). In Acronym Geek. Retrieved 16:22, February 15, 2012, from http://www.acronymgeek.com/HPBG |
| MLA | "HPBG." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HPBG>. |
| MHRA | 'HPBG', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HPBG> [accessed 15 February 2012] |
| Chicago | "HPBG", http://www.acronymgeek.com/HPBG (accessed February 15, 2012). |
| CBE/CSE | HPBG [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HPBG. |
| Bluebook | HPBG, http://www.acronymgeek.com/HPBG (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HPBG, http://www.acronymgeek.com/HPBG (optional description here) (as of Feb. 15, 2012, 16:22). |
| AMA | HPBG. Acronym Geek. February 15, 2012, 16:22. Available at: http://www.acronymgeek.com/HPBG. Accessed February 15, 2012, 16:22. |