| APA | LD50. (2012, February 11). In Acronym Geek. Retrieved 20:08, February 11, 2012, from http://www.acronymgeek.com/LD50 |
| MLA | "LD50." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/LD50>. |
| MHRA | 'LD50', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/LD50> [accessed 11 February 2012] |
| Chicago | "LD50", http://www.acronymgeek.com/LD50 (accessed February 11, 2012). |
| CBE/CSE | LD50 [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/LD50. |
| Bluebook | LD50, http://www.acronymgeek.com/LD50 (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, LD50, http://www.acronymgeek.com/LD50 (optional description here) (as of Feb. 11, 2012, 20:08). |
| AMA | LD50. Acronym Geek. February 11, 2012, 20:08. Available at: http://www.acronymgeek.com/LD50. Accessed February 11, 2012, 20:08. |