| APA | QESI. (2012, February 16). In Acronym Geek. Retrieved 01:37, February 16, 2012, from http://www.acronymgeek.com/QESI |
| MLA | "QESI." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/QESI>. |
| MHRA | 'QESI', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/QESI> [accessed 16 February 2012] |
| Chicago | "QESI", http://www.acronymgeek.com/QESI (accessed February 16, 2012). |
| CBE/CSE | QESI [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/QESI. |
| Bluebook | QESI, http://www.acronymgeek.com/QESI (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, QESI, http://www.acronymgeek.com/QESI (optional description here) (as of Feb. 16, 2012, 01:37). |
| AMA | QESI. Acronym Geek. February 16, 2012, 01:37. Available at: http://www.acronymgeek.com/QESI. Accessed February 16, 2012, 01:37. |