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