| APA | ZDB. (2012, February 14). In Acronym Geek. Retrieved 12:11, February 14, 2012, from http://www.acronymgeek.com/ZDB |
| MLA | "ZDB." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/ZDB>. |
| MHRA | 'ZDB', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/ZDB> [accessed 14 February 2012] |
| Chicago | "ZDB", http://www.acronymgeek.com/ZDB (accessed February 14, 2012). |
| CBE/CSE | ZDB [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/ZDB. |
| Bluebook | ZDB, http://www.acronymgeek.com/ZDB (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ZDB, http://www.acronymgeek.com/ZDB (optional description here) (as of Feb. 14, 2012, 12:11). |
| AMA | ZDB. Acronym Geek. February 14, 2012, 12:11. Available at: http://www.acronymgeek.com/ZDB. Accessed February 14, 2012, 12:11. |