| APA | B4. (2012, February 9). In Acronym Geek. Retrieved 14:15, February 9, 2012, from http://www.acronymgeek.com/B4 |
| MLA | "B4." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/B4>. |
| MHRA | 'B4', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/B4> [accessed 9 February 2012] |
| Chicago | "B4", http://www.acronymgeek.com/B4 (accessed February 9, 2012). |
| CBE/CSE | B4 [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/B4. |
| Bluebook | B4, http://www.acronymgeek.com/B4 (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, B4, http://www.acronymgeek.com/B4 (optional description here) (as of Feb. 9, 2012, 14:15). |
| AMA | B4. Acronym Geek. February 9, 2012, 14:15. Available at: http://www.acronymgeek.com/B4. Accessed February 9, 2012, 14:15. |