| APA | B4K. (2012, February 13). In Acronym Geek. Retrieved 22:59, February 13, 2012, from http://www.acronymgeek.com/B4K |
| MLA | "B4K." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/B4K>. |
| MHRA | 'B4K', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/B4K> [accessed 13 February 2012] |
| Chicago | "B4K", http://www.acronymgeek.com/B4K (accessed February 13, 2012). |
| CBE/CSE | B4K [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/B4K. |
| Bluebook | B4K, http://www.acronymgeek.com/B4K (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, B4K, http://www.acronymgeek.com/B4K (optional description here) (as of Feb. 13, 2012, 22:59). |
| AMA | B4K. Acronym Geek. February 13, 2012, 22:59. Available at: http://www.acronymgeek.com/B4K. Accessed February 13, 2012, 22:59. |