| APA | N.B.. (2012, February 12). In Acronym Geek. Retrieved 01:34, February 12, 2012, from http://www.acronymgeek.com/N.B. |
| MLA | "N.B.." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/N.B.>. |
| MHRA | 'N.B.', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/N.B.> [accessed 12 February 2012] |
| Chicago | "N.B.", http://www.acronymgeek.com/N.B. (accessed February 12, 2012). |
| CBE/CSE | N.B. [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/N.B.. |
| Bluebook | N.B., http://www.acronymgeek.com/N.B. (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, N.B., http://www.acronymgeek.com/N.B. (optional description here) (as of Feb. 12, 2012, 01:34). |
| AMA | N.B.. Acronym Geek. February 12, 2012, 01:34. Available at: http://www.acronymgeek.com/N.B.. Accessed February 12, 2012, 01:34. |