| APA | LDY. (2012, February 11). In Acronym Geek. Retrieved 22:30, February 11, 2012, from http://www.acronymgeek.com/LDY |
| MLA | "LDY." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/LDY>. |
| MHRA | 'LDY', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/LDY> [accessed 11 February 2012] |
| Chicago | "LDY", http://www.acronymgeek.com/LDY (accessed February 11, 2012). |
| CBE/CSE | LDY [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/LDY. |
| Bluebook | LDY, http://www.acronymgeek.com/LDY (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, LDY, http://www.acronymgeek.com/LDY (optional description here) (as of Feb. 11, 2012, 22:30). |
| AMA | LDY. Acronym Geek. February 11, 2012, 22:30. Available at: http://www.acronymgeek.com/LDY. Accessed February 11, 2012, 22:30. |