| APA | D1D. (2012, February 14). In Acronym Geek. Retrieved 10:18, February 14, 2012, from http://www.acronymgeek.com/D1D |
| MLA | "D1D." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/D1D>. |
| MHRA | 'D1D', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/D1D> [accessed 14 February 2012] |
| Chicago | "D1D", http://www.acronymgeek.com/D1D (accessed February 14, 2012). |
| CBE/CSE | D1D [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/D1D. |
| Bluebook | D1D, http://www.acronymgeek.com/D1D (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, D1D, http://www.acronymgeek.com/D1D (optional description here) (as of Feb. 14, 2012, 10:18). |
| AMA | D1D. Acronym Geek. February 14, 2012, 10:18. Available at: http://www.acronymgeek.com/D1D. Accessed February 14, 2012, 10:18. |