| APA | DDDF. (2012, February 15). In Acronym Geek. Retrieved 04:50, February 15, 2012, from http://www.acronymgeek.com/DDDF |
| MLA | "DDDF." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/DDDF>. |
| MHRA | 'DDDF', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/DDDF> [accessed 15 February 2012] |
| Chicago | "DDDF", http://www.acronymgeek.com/DDDF (accessed February 15, 2012). |
| CBE/CSE | DDDF [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/DDDF. |
| Bluebook | DDDF, http://www.acronymgeek.com/DDDF (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, DDDF, http://www.acronymgeek.com/DDDF (optional description here) (as of Feb. 15, 2012, 04:50). |
| AMA | DDDF. Acronym Geek. February 15, 2012, 04:50. Available at: http://www.acronymgeek.com/DDDF. Accessed February 15, 2012, 04:50. |