| APA | DDOY. (2012, February 16). In Acronym Geek. Retrieved 01:53, February 16, 2012, from http://www.acronymgeek.com/DDOY |
| MLA | "DDOY." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/DDOY>. |
| MHRA | 'DDOY', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/DDOY> [accessed 16 February 2012] |
| Chicago | "DDOY", http://www.acronymgeek.com/DDOY (accessed February 16, 2012). |
| CBE/CSE | DDOY [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/DDOY. |
| Bluebook | DDOY, http://www.acronymgeek.com/DDOY (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, DDOY, http://www.acronymgeek.com/DDOY (optional description here) (as of Feb. 16, 2012, 01:53). |
| AMA | DDOY. Acronym Geek. February 16, 2012, 01:53. Available at: http://www.acronymgeek.com/DDOY. Accessed February 16, 2012, 01:53. |