| APA | LDBL. (2012, February 17). In Acronym Geek. Retrieved 07:26, February 17, 2012, from http://www.acronymgeek.com/LDBL |
| MLA | "LDBL." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/LDBL>. |
| MHRA | 'LDBL', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/LDBL> [accessed 17 February 2012] |
| Chicago | "LDBL", http://www.acronymgeek.com/LDBL (accessed February 17, 2012). |
| CBE/CSE | LDBL [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/LDBL. |
| Bluebook | LDBL, http://www.acronymgeek.com/LDBL (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, LDBL, http://www.acronymgeek.com/LDBL (optional description here) (as of Feb. 17, 2012, 07:26). |
| AMA | LDBL. Acronym Geek. February 17, 2012, 07:26. Available at: http://www.acronymgeek.com/LDBL. Accessed February 17, 2012, 07:26. |