| APA | QOS. (2012, February 10). In Acronym Geek. Retrieved 17:08, February 10, 2012, from http://www.acronymgeek.com/QOS |
| MLA | "QOS." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/QOS>. |
| MHRA | 'QOS', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/QOS> [accessed 10 February 2012] |
| Chicago | "QOS", http://www.acronymgeek.com/QOS (accessed February 10, 2012). |
| CBE/CSE | QOS [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/QOS. |
| Bluebook | QOS, http://www.acronymgeek.com/QOS (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, QOS, http://www.acronymgeek.com/QOS (optional description here) (as of Feb. 10, 2012, 17:08). |
| AMA | QOS. Acronym Geek. February 10, 2012, 17:08. Available at: http://www.acronymgeek.com/QOS. Accessed February 10, 2012, 17:08. |