| APA | DDOF. (2012, February 17). In Acronym Geek. Retrieved 04:15, February 17, 2012, from http://www.acronymgeek.com/DDOF |
| MLA | "DDOF." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/DDOF>. |
| MHRA | 'DDOF', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/DDOF> [accessed 17 February 2012] |
| Chicago | "DDOF", http://www.acronymgeek.com/DDOF (accessed February 17, 2012). |
| CBE/CSE | DDOF [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/DDOF. |
| Bluebook | DDOF, http://www.acronymgeek.com/DDOF (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, DDOF, http://www.acronymgeek.com/DDOF (optional description here) (as of Feb. 17, 2012, 04:15). |
| AMA | DDOF. Acronym Geek. February 17, 2012, 04:15. Available at: http://www.acronymgeek.com/DDOF. Accessed February 17, 2012, 04:15. |