| APA | BPEK. (2012, February 17). In Acronym Geek. Retrieved 03:38, February 17, 2012, from http://www.acronymgeek.com/BPEK |
| MLA | "BPEK." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/BPEK>. |
| MHRA | 'BPEK', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/BPEK> [accessed 17 February 2012] |
| Chicago | "BPEK", http://www.acronymgeek.com/BPEK (accessed February 17, 2012). |
| CBE/CSE | BPEK [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/BPEK. |
| Bluebook | BPEK, http://www.acronymgeek.com/BPEK (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, BPEK, http://www.acronymgeek.com/BPEK (optional description here) (as of Feb. 17, 2012, 03:38). |
| AMA | BPEK. Acronym Geek. February 17, 2012, 03:38. Available at: http://www.acronymgeek.com/BPEK. Accessed February 17, 2012, 03:38. |