| APA | PDB. (2012, February 13). In Acronym Geek. Retrieved 20:53, February 13, 2012, from http://www.acronymgeek.com/PDB |
| MLA | "PDB." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/PDB>. |
| MHRA | 'PDB', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/PDB> [accessed 13 February 2012] |
| Chicago | "PDB", http://www.acronymgeek.com/PDB (accessed February 13, 2012). |
| CBE/CSE | PDB [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/PDB. |
| Bluebook | PDB, http://www.acronymgeek.com/PDB (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PDB, http://www.acronymgeek.com/PDB (optional description here) (as of Feb. 13, 2012, 20:53). |
| AMA | PDB. Acronym Geek. February 13, 2012, 20:53. Available at: http://www.acronymgeek.com/PDB. Accessed February 13, 2012, 20:53. |