| APA | BDN. (2012, February 14). In Acronym Geek. Retrieved 06:59, February 14, 2012, from http://www.acronymgeek.com/BDN |
| MLA | "BDN." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/BDN>. |
| MHRA | 'BDN', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/BDN> [accessed 14 February 2012] |
| Chicago | "BDN", http://www.acronymgeek.com/BDN (accessed February 14, 2012). |
| CBE/CSE | BDN [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/BDN. |
| Bluebook | BDN, http://www.acronymgeek.com/BDN (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, BDN, http://www.acronymgeek.com/BDN (optional description here) (as of Feb. 14, 2012, 06:59). |
| AMA | BDN. Acronym Geek. February 14, 2012, 06:59. Available at: http://www.acronymgeek.com/BDN. Accessed February 14, 2012, 06:59. |