| APA | DBUL. (2012, February 15). In Acronym Geek. Retrieved 19:05, February 15, 2012, from http://www.acronymgeek.com/DBUL |
| MLA | "DBUL." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/DBUL>. |
| MHRA | 'DBUL', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/DBUL> [accessed 15 February 2012] |
| Chicago | "DBUL", http://www.acronymgeek.com/DBUL (accessed February 15, 2012). |
| CBE/CSE | DBUL [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/DBUL. |
| Bluebook | DBUL, http://www.acronymgeek.com/DBUL (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, DBUL, http://www.acronymgeek.com/DBUL (optional description here) (as of Feb. 15, 2012, 19:05). |
| AMA | DBUL. Acronym Geek. February 15, 2012, 19:05. Available at: http://www.acronymgeek.com/DBUL. Accessed February 15, 2012, 19:05. |