| APA | CDDN. (2012, February 15). In Acronym Geek. Retrieved 12:20, February 15, 2012, from http://www.acronymgeek.com/CDDN |
| MLA | "CDDN." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/CDDN>. |
| MHRA | 'CDDN', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/CDDN> [accessed 15 February 2012] |
| Chicago | "CDDN", http://www.acronymgeek.com/CDDN (accessed February 15, 2012). |
| CBE/CSE | CDDN [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/CDDN. |
| Bluebook | CDDN, http://www.acronymgeek.com/CDDN (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, CDDN, http://www.acronymgeek.com/CDDN (optional description here) (as of Feb. 15, 2012, 12:20). |
| AMA | CDDN. Acronym Geek. February 15, 2012, 12:20. Available at: http://www.acronymgeek.com/CDDN. Accessed February 15, 2012, 12:20. |