| APA | BLL. (2012, February 14). In Acronym Geek. Retrieved 04:09, February 14, 2012, from http://www.acronymgeek.com/BLL |
| MLA | "BLL." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/BLL>. |
| MHRA | 'BLL', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/BLL> [accessed 14 February 2012] |
| Chicago | "BLL", http://www.acronymgeek.com/BLL (accessed February 14, 2012). |
| CBE/CSE | BLL [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/BLL. |
| Bluebook | BLL, http://www.acronymgeek.com/BLL (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, BLL, http://www.acronymgeek.com/BLL (optional description here) (as of Feb. 14, 2012, 04:09). |
| AMA | BLL. Acronym Geek. February 14, 2012, 04:09. Available at: http://www.acronymgeek.com/BLL. Accessed February 14, 2012, 04:09. |