| APA | LTRS. (2012, February 16). In Acronym Geek. Retrieved 20:23, February 16, 2012, from http://www.acronymgeek.com/LTRS |
| MLA | "LTRS." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/LTRS>. |
| MHRA | 'LTRS', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/LTRS> [accessed 16 February 2012] |
| Chicago | "LTRS", http://www.acronymgeek.com/LTRS (accessed February 16, 2012). |
| CBE/CSE | LTRS [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/LTRS. |
| Bluebook | LTRS, http://www.acronymgeek.com/LTRS (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, LTRS, http://www.acronymgeek.com/LTRS (optional description here) (as of Feb. 16, 2012, 20:23). |
| AMA | LTRS. Acronym Geek. February 16, 2012, 20:23. Available at: http://www.acronymgeek.com/LTRS. Accessed February 16, 2012, 20:23. |