| APA | DD/D. (2012, February 12). In Acronym Geek. Retrieved 13:35, February 12, 2012, from http://www.acronymgeek.com/DD/D |
| MLA | "DD/D." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/DD/D>. |
| MHRA | 'DD/D', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/DD/D> [accessed 12 February 2012] |
| Chicago | "DD/D", http://www.acronymgeek.com/DD/D (accessed February 12, 2012). |
| CBE/CSE | DD/D [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/DD/D. |
| Bluebook | DD/D, http://www.acronymgeek.com/DD/D (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, DD/D, http://www.acronymgeek.com/DD/D (optional description here) (as of Feb. 12, 2012, 13:35). |
| AMA | DD/D. Acronym Geek. February 12, 2012, 13:35. Available at: http://www.acronymgeek.com/DD/D. Accessed February 12, 2012, 13:35. |