| APA | BIE. (2012, February 14). In Acronym Geek. Retrieved 07:55, February 14, 2012, from http://www.acronymgeek.com/BIE |
| MLA | "BIE." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/BIE>. |
| MHRA | 'BIE', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/BIE> [accessed 14 February 2012] |
| Chicago | "BIE", http://www.acronymgeek.com/BIE (accessed February 14, 2012). |
| CBE/CSE | BIE [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/BIE. |
| Bluebook | BIE, http://www.acronymgeek.com/BIE (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, BIE, http://www.acronymgeek.com/BIE (optional description here) (as of Feb. 14, 2012, 07:55). |
| AMA | BIE. Acronym Geek. February 14, 2012, 07:55. Available at: http://www.acronymgeek.com/BIE. Accessed February 14, 2012, 07:55. |