| APA | NDB. (2012, February 14). In Acronym Geek. Retrieved 03:54, February 14, 2012, from http://www.acronymgeek.com/NDB |
| MLA | "NDB." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/NDB>. |
| MHRA | 'NDB', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/NDB> [accessed 14 February 2012] |
| Chicago | "NDB", http://www.acronymgeek.com/NDB (accessed February 14, 2012). |
| CBE/CSE | NDB [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/NDB. |
| Bluebook | NDB, http://www.acronymgeek.com/NDB (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, NDB, http://www.acronymgeek.com/NDB (optional description here) (as of Feb. 14, 2012, 03:54). |
| AMA | NDB. Acronym Geek. February 14, 2012, 03:54. Available at: http://www.acronymgeek.com/NDB. Accessed February 14, 2012, 03:54. |