| APA | LDD. (2012, February 9). In Acronym Geek. Retrieved 21:12, February 9, 2012, from http://www.acronymgeek.com/LDD |
| MLA | "LDD." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/LDD>. |
| MHRA | 'LDD', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/LDD> [accessed 9 February 2012] |
| Chicago | "LDD", http://www.acronymgeek.com/LDD (accessed February 9, 2012). |
| CBE/CSE | LDD [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/LDD. |
| Bluebook | LDD, http://www.acronymgeek.com/LDD (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, LDD, http://www.acronymgeek.com/LDD (optional description here) (as of Feb. 9, 2012, 21:12). |
| AMA | LDD. Acronym Geek. February 9, 2012, 21:12. Available at: http://www.acronymgeek.com/LDD. Accessed February 9, 2012, 21:12. |