| APA | LTRR. (2012, February 15). In Acronym Geek. Retrieved 23:38, February 15, 2012, from http://www.acronymgeek.com/LTRR |
| MLA | "LTRR." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/LTRR>. |
| MHRA | 'LTRR', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/LTRR> [accessed 15 February 2012] |
| Chicago | "LTRR", http://www.acronymgeek.com/LTRR (accessed February 15, 2012). |
| CBE/CSE | LTRR [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/LTRR. |
| Bluebook | LTRR, http://www.acronymgeek.com/LTRR (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, LTRR, http://www.acronymgeek.com/LTRR (optional description here) (as of Feb. 15, 2012, 23:38). |
| AMA | LTRR. Acronym Geek. February 15, 2012, 23:38. Available at: http://www.acronymgeek.com/LTRR. Accessed February 15, 2012, 23:38. |