| APA | LDF. (2012, February 10). In Acronym Geek. Retrieved 16:50, February 10, 2012, from http://www.acronymgeek.com/LDF |
| MLA | "LDF." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/LDF>. |
| MHRA | 'LDF', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/LDF> [accessed 10 February 2012] |
| Chicago | "LDF", http://www.acronymgeek.com/LDF (accessed February 10, 2012). |
| CBE/CSE | LDF [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/LDF. |
| Bluebook | LDF, http://www.acronymgeek.com/LDF (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, LDF, http://www.acronymgeek.com/LDF (optional description here) (as of Feb. 10, 2012, 16:50). |
| AMA | LDF. Acronym Geek. February 10, 2012, 16:50. Available at: http://www.acronymgeek.com/LDF. Accessed February 10, 2012, 16:50. |