| APA | LDOU. (2012, February 15). In Acronym Geek. Retrieved 14:36, February 15, 2012, from http://www.acronymgeek.com/LDOU |
| MLA | "LDOU." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/LDOU>. |
| MHRA | 'LDOU', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/LDOU> [accessed 15 February 2012] |
| Chicago | "LDOU", http://www.acronymgeek.com/LDOU (accessed February 15, 2012). |
| CBE/CSE | LDOU [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/LDOU. |
| Bluebook | LDOU, http://www.acronymgeek.com/LDOU (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, LDOU, http://www.acronymgeek.com/LDOU (optional description here) (as of Feb. 15, 2012, 14:36). |
| AMA | LDOU. Acronym Geek. February 15, 2012, 14:36. Available at: http://www.acronymgeek.com/LDOU. Accessed February 15, 2012, 14:36. |