| APA | NBI. (2012, February 10). In Acronym Geek. Retrieved 11:20, February 10, 2012, from http://www.acronymgeek.com/NBI |
| MLA | "NBI." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/NBI>. |
| MHRA | 'NBI', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/NBI> [accessed 10 February 2012] |
| Chicago | "NBI", http://www.acronymgeek.com/NBI (accessed February 10, 2012). |
| CBE/CSE | NBI [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/NBI. |
| Bluebook | NBI, http://www.acronymgeek.com/NBI (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, NBI, http://www.acronymgeek.com/NBI (optional description here) (as of Feb. 10, 2012, 11:20). |
| AMA | NBI. Acronym Geek. February 10, 2012, 11:20. Available at: http://www.acronymgeek.com/NBI. Accessed February 10, 2012, 11:20. |