| APA | BSI. (2012, February 9). In Acronym Geek. Retrieved 18:25, February 9, 2012, from http://www.acronymgeek.com/BSI |
| MLA | "BSI." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/BSI>. |
| MHRA | 'BSI', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/BSI> [accessed 9 February 2012] |
| Chicago | "BSI", http://www.acronymgeek.com/BSI (accessed February 9, 2012). |
| CBE/CSE | BSI [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/BSI. |
| Bluebook | BSI, http://www.acronymgeek.com/BSI (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, BSI, http://www.acronymgeek.com/BSI (optional description here) (as of Feb. 9, 2012, 18:25). |
| AMA | BSI. Acronym Geek. February 9, 2012, 18:25. Available at: http://www.acronymgeek.com/BSI. Accessed February 9, 2012, 18:25. |