| APA | QETL. (2012, February 14). In Acronym Geek. Retrieved 23:57, February 14, 2012, from http://www.acronymgeek.com/QETL |
| MLA | "QETL." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/QETL>. |
| MHRA | 'QETL', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/QETL> [accessed 14 February 2012] |
| Chicago | "QETL", http://www.acronymgeek.com/QETL (accessed February 14, 2012). |
| CBE/CSE | QETL [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/QETL. |
| Bluebook | QETL, http://www.acronymgeek.com/QETL (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, QETL, http://www.acronymgeek.com/QETL (optional description here) (as of Feb. 14, 2012, 23:57). |
| AMA | QETL. Acronym Geek. February 14, 2012, 23:57. Available at: http://www.acronymgeek.com/QETL. Accessed February 14, 2012, 23:57. |