| APA | ONSY. (2012, February 17). In Acronym Geek. Retrieved 07:59, February 17, 2012, from http://www.acronymgeek.com/ONSY |
| MLA | "ONSY." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/ONSY>. |
| MHRA | 'ONSY', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/ONSY> [accessed 17 February 2012] |
| Chicago | "ONSY", http://www.acronymgeek.com/ONSY (accessed February 17, 2012). |
| CBE/CSE | ONSY [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/ONSY. |
| Bluebook | ONSY, http://www.acronymgeek.com/ONSY (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ONSY, http://www.acronymgeek.com/ONSY (optional description here) (as of Feb. 17, 2012, 07:59). |
| AMA | ONSY. Acronym Geek. February 17, 2012, 07:59. Available at: http://www.acronymgeek.com/ONSY. Accessed February 17, 2012, 07:59. |