| APA | BKI. (2012, February 11). In Acronym Geek. Retrieved 22:52, February 11, 2012, from http://www.acronymgeek.com/BKI |
| MLA | "BKI." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/BKI>. |
| MHRA | 'BKI', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/BKI> [accessed 11 February 2012] |
| Chicago | "BKI", http://www.acronymgeek.com/BKI (accessed February 11, 2012). |
| CBE/CSE | BKI [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/BKI. |
| Bluebook | BKI, http://www.acronymgeek.com/BKI (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, BKI, http://www.acronymgeek.com/BKI (optional description here) (as of Feb. 11, 2012, 22:52). |
| AMA | BKI. Acronym Geek. February 11, 2012, 22:52. Available at: http://www.acronymgeek.com/BKI. Accessed February 11, 2012, 22:52. |