| APA | OTL. (2012, February 8). In Acronym Geek. Retrieved 11:06, February 8, 2012, from http://www.acronymgeek.com/OTL |
| MLA | "OTL." Acronym Geek. (2012). Acronym Geek. 8 Feb 2012 <http://www.acronymgeek.com/OTL>. |
| MHRA | 'OTL', Acronym Geek, 8 February 2012, <http://www.acronymgeek.com/OTL> [accessed 8 February 2012] |
| Chicago | "OTL", http://www.acronymgeek.com/OTL (accessed February 8, 2012). |
| CBE/CSE | OTL [Internet]. Acronym Geek; 2012 Feb 8 [cited 2012 Feb 8]. Available from: http://www.acronymgeek.com/OTL. |
| Bluebook | OTL, http://www.acronymgeek.com/OTL (last visited February 8, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OTL, http://www.acronymgeek.com/OTL (optional description here) (as of Feb. 8, 2012, 11:06). |
| AMA | OTL. Acronym Geek. February 8, 2012, 11:06. Available at: http://www.acronymgeek.com/OTL. Accessed February 8, 2012, 11:06. |